Set up a place where there is enough room for everyone to have a foot of so on each side of them and their paper, lay out all the supplies and paper and have a sample of the end painting they are all shooting to copy set up where they can all see it. I set a small table easel at the end of each rectangular table so they could look up at it as they painted their painting. Make sure the room is comfortable and air-conditioned. A barn will not do in the summer or winter months because senior citizens are too sensitive to heat and cold. I've seen well-meaning people set up tables in their garage or barn thinking it was the perfect space for classes because the cleanup would be minimal but the area was so hot and intolerable that I couldn't stand it let alone the seniors. Once you have space and tables, allow for enough time for each picture to be completed. It was hard at first for me to gauge how much time seniors would need to complete a small painting but I began to realize that too many details like little houses and flowers were just too much for the seniors. I started making landscapes with large areas of color washes that could be laid in quickly with a few swipes and only a few small details for interest. This made an interesting painting they could complete in just a little over an hour.