It is possible to deactivate users in SMS. Users that are inactive:

• Will not be able to log in
  
  
  
• Will not receive e-mail messages from Castor SMS
• Are no longer visible when adding a study member to a study team
  
  
  
• Are no longer shown in the user menu, only when filtered on 'inactive'
  
  
  

Why deactivate users?

• When someone shouldn't have access to Castor SMS anymore. For example when the person is no longer working for the institute.
• When an incorrect email address was used. 

How to deactivate users?

• Go the the User menu
• Use the right mouse button, and choose "Deactivate user"
  
  
• Or select multiple users and use the bulk action button to deactivate the users at the same time.
  
  
  

How to reactivate users? 

• Go to the user menu and filter on inactive users. 
• Use your right mouse button and choose "activate user"