It is the same process, but you may want to consider including one individual from each “area” if there are a mix of tasks. It will also help to plan on an “open house” before the 5S and make sure to invite everyone when you explain/showcase the changes. Be open to feedback from the group and make changes that make sense. A larger group may require more upfront planning, and official 5S Charter etc. It might be useful to hand-out the 5S Assessment Template to everyone in the area to get their initial feedback prior to the 5S. This is a form of involvment and that builds ownership.