We are installing plumbing and purchased studor vents, where and how do we install the studor vents, please help, we need a diagram if possible :)

Studor Vents or AAV's(Air Admittance Valves) take the place of a regular vent through your roof. They mount downstream from the trap and perform a regular vents function. Install a upright tee between the trap and the wall stub out. Now glue in a Studor Vent and the fixture will be vented. Good luck, Tom

Can a studor vent be installed insde the wall

can a studor vent be installed insde the wall Only if a access panel is provided.
Since a AAV is a mechanical vent it can go bad. If it's inside a wall it can't be serviced so it's best to keep them where you can get at them. AAV's aren't allowed in some areas. Check your local codes. Good luck