This question comes up pretty frequently. And it's a good question, because there are some ramifications to changing a staffer's home room.
How It Works
As you know, most staffer's have an advisory/home room within Enriching Students. The students are associated with their home room teacher, based on the home room. So if you modify the home room in any way, the students will no longer be associated with that teacher. As a matter of fact, they won't have any home room teacher at all.
If It Needs to Be Changed
Let's say that two teachers have been assigned to the same home room, 222. You want to create a 222A and a 222B.
The first thing you will want to do is contact the teacher and determine who they have in their home rooms.
Once you have a list of the students and whom they belong to, click Settings -> Manage Staff and find the staffer you need to edit; click their name. And edit page appears.
Change the home room for that staffer and click save.
Now, under Settings -> Manage Students, select the individual students and change their home room. Be sure to save your changes to each student.
By taking this approach, you can move both a staffer and their students to a new home room.