Please follow the steps below
- Go to the general configuration page
-
Select an option where the add-in will get users list. There are 3 options type
-
If all users in site. Select All user in site
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If all users in users info list. Select Users from List 'Manage Users
information'
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If all users in SharePoint Group. Select another
If you select the SharePoint Group, Please make sure that "Who can view the
membership of the group?" in Group Settings is everyone