Setting up in the art classroom

I normally use ClassDojo for my K-6th grade art classes. I want to use this in my art classrooms for 4th, 5th, and 6th graders. I don't have computers in my classroom besides mine. I may be able to check out one for each table/group if the students really need to get on to use this program.

What would be the best way to work this into an art room? Are there any art teachers with opinions or advice for using it in 45 min art class times?