On thre Derro Lair, area "B11. The feast" it says "There are a total of 12 derros..."
That area has a total of 12-13 squares, so I was wondering if I should spawn all the derros at the same time or maybe in groups 4/4/4.
The party has 5 members so if they go inside this area and then the fight starts, all will be very crowded.
I should spawn all the derros at the same time or spawn them in groups?