There are three relevant tables in this scenario, Projects, Groups, and a summary table called Project Groups. There is a one to many relationship from Projects and from Groups to the Project Groups table. This is to allow a project to be a member of multiple groups, and a group can contain multiple projects.
I would like to show an embedded report in the projects form that shows all of the other projects (with some other relevant fields) that share a group with the project I am viewing, and I plan to group that report by Group. Is there a way to accomplish this?