Hi, sorry this is not possible within Dungeoneering as solo player.
You can exit to lobby whilst in a group and re-join in the end.
Best I can suggest is bring mobile wherever you go and click somewhere on screen to avoid it kicking you out.
Life is like a camera: Just
focus
on what's important,
capture
the good times,
develop
from the negatives, and if things don't work out,
take another shot
!
30-Jan-2021 21:22:18