Im sorry for getting back to you so late, we ask for 8 hours minimum, Sundays around 11 AM PST. They last a few hours. We have a division of concept artists and if its a brand new area we expect the level designer to plan it out typically from a top down make sure they are thinking of all the aspects. Do you have a discord?
Note: We are looking for a few Prop Modelers/ Level Designers currently!