For what it’s worth, I realised after writing, that one can link Users either with the Assignment extension or just by using a normal entity Relationship. If limiting to max one user is desirable, the latter method (defining as many-to-one or one-to-one) is useful. The Assignment extension seems to be fixed as ‘many-to-many’.
I think there’s still lots of value in being able to set constraints on relationships (min/max count or based on filters).
1 Like