How can I limit the applications a user can access? My brother is using my computer tomorrow and he just needs zoom, how do I force zoom to the foreground until I enter a password? I am not good with apple script, so if you could make it so I can just use it that would be good. I am on a school computer so I do not have admin rights.
You don‘t need Applescript for this. 


Open System Preferences
Create a new standard or Managed with Parental Controls user account for your brother
Enable Parental Control on this account
Limit access to the applications you want him to use