> ## Documentation Index > Fetch the complete documentation index at: https://help.lobyco.com/llms.txt > Use this file to discover all available pages before exploring further. # Control how often customers are rescanned > Create the settings presets stores share for timeout and rescan frequency, and change the rescan frequency for a set period with a scheduled change. This page shows you how to set how often Scan & Pay customers are rescanned, for good or for a set period. It's for clients who have Scan & Pay. Presets need write access to Scan & Pay, and scheduled changes need the Scan & Pay admin role. > [!NOTE] > > **A rescan is a check where a store employee scans the customer's items again before they pay.** ## Open Settings presets In Lobyco Nexus, open **Store configuration → Scan & Pay → Store configuration**, then the **Settings presets** tab. A settings preset is a saved set of values that many stores share. Each store uses one preset, or its own **Custom** values. [Set up Scan & Pay in a store](/business-documentation/self-service/set-up-scan-and-pay#choose-the-store-settings) shows where a store picks it. | Column | What it shows | | - | - | | **Settings name** | The preset's name. | | **Timeout countdown** | The preset's timeout countdown, in minutes and seconds. | | **Rescan frequency** | How often customers in the preset's stores are rescanned, as a percentage. | | **Last edit** | When the preset was last changed. | | **Edited by** | Who changed it last. | ## Create a settings preset Select **Create new preset**, then fill in **Settings preset details**. | Field | What it does | | - | - | | **Preset name** | Names the preset. It's what you pick in a store's **Select settings**. Required. | | **Timeout countdown** | A time in minutes and seconds (mm:ss). Required. | | **Rescan percentage** | How often customers are rescanned, from 0 to 100. Required. | | **Disable random rescan** | When it's on, stores using this preset never trigger a random rescan. | Each preset needs a name of its own. Two presets also can't share the same **Timeout countdown** and **Rescan percentage**. Select **Save** to add the preset to the list. ![The Create new settings preset page. Settings preset details has a warning icon and the line Changes to settings presets will impact all stores that use the preset. Preset name, which is required, is empty, with the hint Choose preset name. Timeout countdown, which is required, is in (mm:ss) and shows 00 : 00. Rescan percentage, which is required, shows 0 with a % sign. The Disable random rescan switch is off, with the line Stores using this preset will never trigger random rescans under it. Cancel and a greyed-out Save are at the bottom right.](https://mintcdn.com/lobyco-4c9fb3ad/rG971_5ZfS49bcjM/images/administer-34-new-settings-preset.png?fit=max\&auto=format\&n=rG971_5ZfS49bcjM\&q=85\&s=23f6124c45a3c377a265a96141898295) *A new settings preset* ## Change or delete a preset Select the preset in the list. You can also select **…** at the end of its row, then **Edit**. Change the fields and select **Save**. The preset's own change log, **Change log** with the preset's name, is at the bottom of the page. > [!WARNING] > > **A change to a preset applies to every store that uses it.** To find the stores on a preset, filter the **Store configurations** tab by **Settings**. To delete a preset, select **…** at the end of its row, then **Delete**. Select **Yes, delete settings preset** to confirm. You can't undo it. You can't delete a preset that a store still uses. The portal tells you it's in use. Move each of its stores to another preset first, then delete it. ## Schedule a temporary rescan change A scheduled change sets a different rescan frequency for a set period. It changes only the rescan frequency, not **Timeout countdown**. Open the **Scheduled changes** tab. Its changes are in three lists: * **Active** for changes running now. * **Future** for changes that haven't started yet. * **Expired** for changes that have ended. Each list shows the **Change name**, **Start date**, **End date**, **Segmentation**, **Rescan frequency** and **Creator**. **Segmentation** names the presets the change covers. Select **Schedule new change**. The form opens under the heading **Add new configuration**. | Field | What it does | | - | - | | **Change name** | Names the change in the lists. Required. | | **Select store configurations** | Lists your settings presets, not single stores. The change covers every store that uses the presets you pick. **Select all** picks them all. A store on **Custom** values can't be included. Required. | | **Rescan percentage** | The rescan frequency while the change runs, from 0 to 100. Required. | | **Start date** | When the change starts, as a date and a time. It has to be in the future. Required. | | **End date** | When the change ends. It has to be after the start date. Required. | The form warns that any value other than 0% can cause a spike in rescans when the change ends. It also recommends scheduling changes outside opening hours. Select **Save**. The change shows under **Future** until its start date, then moves to **Active**. ![The page for a new scheduled change, headed Add new configuration. Rescan change details has a warning icon and the line Scheduled changes affect the rescan frequency for selected store configurations for a temporary time period. Change name, which is required, has the hint Choose change name. Select store configurations, which is required, is open on a list with Select all at the top and the presets Standard, aaa and ttt. Schedule rescan change has Start date and End date, both required and reading dd/mm/yyyy 00:00, with the hint It is recommended to schedule changes in rescan frequency outside opening hours. Cancel and a greyed-out Save are at the bottom right.](https://mintcdn.com/lobyco-4c9fb3ad/rG971_5ZfS49bcjM/images/administer-35-new-scheduled-change.png?fit=max\&auto=format\&n=rG971_5ZfS49bcjM\&q=85\&s=1dc4fea7d9e49b5e7ebaace237914c7f) *A new scheduled change, with Select store configurations open* ## Change, stop or delete a scheduled change Select the change in its list. You can also select **…** at the end of its row. What you can do depends on which list it's in. | The change is in | What you can do | | - | - | | **Future** | Change any field and select **Save**. Or select **…**, then **Delete**, and confirm with **Yes, delete scheduled change**. | | **Active** | Change its name, presets and rescan percentage, but not its dates. Or select **…**, then **Deactivate**, and confirm with **Yes, deactivate scheduled change** to stop it. | | **Expired** | Open it to read. You can't change it. | > [!WARNING] > > **You can't undo Delete or Deactivate.** Each change has its own change log at the bottom of its form. ![The Scheduled changes tab of the Scan & Pay screen, with Schedule new change at the top right. Three lists, Active, Future and Expired, each have the columns Change name, Start date, End date, Segmentation, Rescan frequency and Creator, and each reads No results.](https://mintcdn.com/lobyco-4c9fb3ad/rG971_5ZfS49bcjM/images/administer-36-scheduled-changes-tab.png?fit=max\&auto=format\&n=rG971_5ZfS49bcjM\&q=85\&s=a630ca7f2259ce5172774943d7038258) *The Scheduled changes tab, with no changes yet* ## Troubleshooting > **Why can't I save my preset?** > > Another preset already has that name, or the same **Timeout countdown** and **Rescan percentage**. The form says which. Change the name or one of the two values. > **Why can't I delete a preset?** > > At least one store still uses it. Filter the **Store configurations** tab by **Settings** to find those stores. Move each one to another preset, then delete it. > **Why don't I see the Scheduled changes tab?** > > Scheduled changes need the Scan & Pay admin role. [Nexus roles](/integration/get-started/admin-portal-roles) lists the roles, which are set in your organisation's Azure AD. > **Why can't I pick one store for a scheduled change?** > > A scheduled change covers presets, not single stores. To change one store on its own, give it **Custom** values in its configuration. See [Set up Scan & Pay in a store](/business-documentation/self-service/set-up-scan-and-pay#choose-the-store-settings). ## Related * **[Set up Scan & Pay in a store](/business-documentation/self-service/set-up-scan-and-pay)**: pick the preset a store uses, or give it its own values. * **[Put a store in maintenance mode](/business-documentation/self-service/put-a-store-in-maintenance-mode)**: turn maintenance mode on or off for one store or many. * **[Scan & Pay and payments data package](/integration/data-platform/data-packages/scan-pay-and-payments-pay_)**: rescans and store settings as data, for your data team. 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