To do this we created a stored procedure and added it as a startup procedure so that whenever the SQL server service is restarted then the stored procedure will automatically grant the access to the group on the tempdb.
Add the domain group to the SQL server logins and then create the following procedure:
create proc sp_grant_access
sp_procoption 'sp_grant_access','startup', 'on'
Happy Learning & Troubleshooting!!
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