where specifically is the teather anchor on my 2000 extra cab? how do I get to it? do I need to remove the seat back to get to it?

 

Just curious is it safe to put the baby's car seat in the middle on a standard cab 2007 f150? Buying another vehicle isn't really an option right now but I want my child to be safe. We are still planning for the child but I want to get answers ahead of time.

Thank you