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This permission controls whether a user can set a sheet's update schedule to "Realtime". Users without this permission will only be able to create exports that are updated manually or on a custom schedule. By default, any logged in user has this permission.
Google Sheets Integration - Export JSM Customer Data
This permission controls whether a user can export JSM user and organization data. By default, no user has this permission. In addition, the functionality also has to be enabled under Apps > Google Sheets Integration > Configuration > Additional Export Tab Options > JSM Customers, which needs to be switched on.