Parent to Child relationship where the Child can select multiple parents?

So the solution is to builds middle  table or a join table it is sometimes called Case Attorneys.

Then when viewing a case record, there  would be a lead attorney select from the drop-down at the top of the case and then there would be an embedded child  table of its assisting attorneys.

And conversely there would be a record for the attorney and it could list two separate tables. One table would be the table of cases where that attorney is the lead attorney, and a second embedded  report would be a list of the cases where that attorney is an assisting  attorney.