i want Redirect users based on the user group or access level after login in Joomla 3 . For example (sarah is a Customer: after login redirect to CustomerManagment page) and (ted is a admin : after login redirect him to siteManagment page). What extension should I use?
The free or paid version of Redirect on Login will do this for you.
I haven't used it but it looks like Redirect After Login (not free) does this too.
You can likely find other similar extensions in the Joomla Extensions Directory.