Hi Khudeja,
You can try this,
1. Create a field in User Setup let's say a boolean FastTabVisible.
2. Create a boolean variable pageFastTabVisible which will be set on the Visible property for the FastTab
3. When the page opens set the boolean true or false depending upon a the user id and user setup
Code will be on OnOpenPage trigger
User.Get(USERSECURITYID);
UserSetup.Get(User);
If UserSetup.FastTabVisible = True then
pageFastTabVisible :=True
Else
pageFastTabVisible := False;
I hope this resolves your issue.
Let me know if you need help.