You can learn from this article how to obtain a list of current GoToAssist users.

1. Sign in to the classic GoTo Admin Center at https://admin.logmeininc.com.
2. Select Reports from the navigation pane on the left.
3. Under Choose a Report Type, select User Status Report.
4. Under Select Users or Groups, change the Filter category to Products and Filter by: to GoToAssist Remote Support.
5. Click Create.