# On-Call Scheduling User Security

**URL:** <https://forum.inductiveautomation.com/t/on-call-scheduling-user-security/47756>\
**Category:** Ignition\
**Tags:** clientsecurity, ignition81\
**Created:** [June 14, 2021, 6:05pm UTC](https://forum.inductiveautomation.com/t/on-call-scheduling-user-security/47756 "2021-06-14T18:05:09Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![gors060](https://avatars.discourse-cdn.com/v4/letter/g/ed655f/32.png) [@gors060](https://forum.inductiveautomation.com/u/gors060)\
**Post date:** [June 14, 2021, 6:05pm UTC](https://forum.inductiveautomation.com/t/on-call-scheduling-user-security/47756/1 "2021-06-14T18:05:09Z")

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I am trying to edit the on call rosters tab so that there is no option to select a different user source than the one that exists within the project. Any idea if this can be done? I know that you can place security on the tab or disable to management of it, but I want that to be editable, just not the “Add users from” drop down list.

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**Author:** ![paul-griffith](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/paul-griffith/32/37249_2.png) [@paul-griffith](https://forum.inductiveautomation.com/u/paul-griffith)\
**Post date:** [June 14, 2021, 6:13pm UTC](https://forum.inductiveautomation.com/t/on-call-scheduling-user-security/47756/2 "2021-06-14T18:13:07Z")

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Assuming you’re using the Roster Management component in Vision, there’s no way to hide specific _user sources_, but you can implement a fairly simple workaround by implementing the `filterAvailableUsers` extension function so that if another user source is selected no users are available:

 ![image](https://us1.discourse-cdn.com/inductiveautomation/original/3X/c/a/ca2763d480d6d503aee0c1a800218499c547f82d.png)  
 ![screenshotTkswev](https://us1.discourse-cdn.com/inductiveautomation/original/3X/7/d/7d4e15a5eead2fcdeb2829a2663963db75aec7b5.gif)

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<div class="post-metadata">

**Author:** ![gors060](https://avatars.discourse-cdn.com/v4/letter/g/ed655f/32.png) [@gors060](https://forum.inductiveautomation.com/u/gors060)\
**Post date:** [June 14, 2021, 6:16pm UTC](https://forum.inductiveautomation.com/t/on-call-scheduling-user-security/47756/3 "2021-06-14T18:16:20Z")

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Thanks! That is what I was looking for.