We would like to have the possibility to include a Multi-user picker in Advanced Roadmaps, right now, this type of custom field is not supported.

Use case:
We use a project called 'ABC' which is basically an ideation board (where all issue types are epics), from there we link development stories from other dev projects (mobile app, web, backend) to those epics. Our ideation board includes stakeholders, brand digital teams, and our design team in addition to product management. As we plan at the 'ABC' level, we assign product managers to those. We had a custom single user picker field for this, but we soon realized that for features that go across products (app and backend), we wanted to capture the two product managers in that field.