Restriction card set a timer ?

[Tipalo]

Hi there my use case: I am using this as a simple unlock to the HA menus. I have a button labeled Unlock Menus and upon entering the PIN and pressing the button again, it navigates to a similar looking dashboard that has Kiosk Mode disabled, so sidebar and menus are visible.

What I would like to do is relock or go back to the Restriction dashboard after a timeout period. Unfortunately I do not know of any way to detect "system idle" and also how to cause an event to run upon navigation so that I can set a timer.