Dynamic RLS and one-to-many relationship

[Planky]

I have a report that I want to use dynamic row level security.  While I have implemented basic RLS before, I am getting thoroughly confused with the following situation. 

I have a user table consisting of an id and user email address:

WorkloadID	username
1	bob @ domain
2	jane @ domain
3	bob @ domain

The id is related to a workloads table (* to 1):

WorkloadID	Name
1	AppABC
2	123 Comms Ltd
3	Amazing App Co

This would mean bob should see workloads 1 and 3, with Jane seeing  2 when RLS is applied 

The trouble here is the relationship between the workload table and the user table is one to many (one user may have many workloads). 

How would I configure RLS in this case?  Ive been attempting to setup role filters on the workload table without any succes so far. 

Edit: Looking at this at the moment https://radacad.com/dynamic-row-level-security-with-profiles-and-users-in-power-bi

[amitchandak · Accepted solution]

@Planky , Forcefully make it many to many bi-directional with bi-directional security or

or many to many Table 1 filter Table 2

[Planky]

Thanks. I changed the cross filter to both and applied security in both directions, which works.  I was reading that doing that should be avoided due to performance issues, but couldnt see how to apply the subsequent dax in my situation.