Recently Used Apps Button aka RUAB

Even in the Favourite Apps users have to scroll down oftenly which us little stressful at times, so it would be nice if Users can have a Recently Used/Open Apps Button, which appears at the Right Top Corner in a form of small Blinking Dot like this⚪ OR like this🔸 or a symbol like this=📌.

Also this RUAB feature coupe be turned on and off from the Settings and also this RUAB chhod be moved to different area of the Home Screen as per User's Choice.