How are you tracking your presence? If with your phone, then it can be as simple as:
If “Member”
Away from Home
then
Turn on Hoover delay 30 mins
I’m using Alexa to track presence because ST App has been terribly unreliable. Created virtual presence sensors using vEdge Creator from @TAustin with the setting for Contact sensor set to on. In Alexa I have two routines; one for when I leave and one for when I arrive that turn on or turn off the contact sensor respectively. Then in ST:
If “My Presence” is Not Present
then
Turn on Hoover delay 30 mins