Is it possible to disable leaving instance in IB?

[Riltar]

I am raning instances by to cars. One bot and one char that i am tanking manualy.
So my second char (bot) is ussialy leaving instance after killing last boss and passes all loot! How to disable it?

 

[Tony]

on your follower hit bot settings button while you are on Partybot mode and you will see all the available options

for rolling you need AutoEquip enabled