Only the Storm Administrator can update Storm Settings and user management of a Storm.
Due to content ownership of users in a Storm, we do not offer Storm Administrators to directly remove a user from the Storm. However, there are three ways by which you can effectively manage this if you no longer require contribution from users:
2. Change the Storm to Read-Only access as a Closed Storm - When the Storm Administrator closes the Storm, the Storm becomes a Read-Only file making anyone in the Storm unable to collaborate in it. You can still generate Storm reports and if contribution is required in the future you can Re-Open the Storm then reenabling the contributors. Follow the Steps mentioned in the link below close a Storm:
Once the Storm has been Closed the Team Administrator can disable the contributors removing them from all future billing cycles. Here's how:
How do I disable/remove users on my team?
3. Request the user to leave the Storm - The Storm Administrator can request any user that you do not require contribution from to leave the Storm. Users in a Storm can manually leave any time by following this article:
Once the users leaves the Storm, the Team Administrator can disable the user removing them from all future billing cycles. Follow the final instructions from step 2 in order to disable the users.