there should be a way to assign issues to multiple users and multiple groups. Also there should be a way to assign grouped clashes to different people when using the clashes to issues tool.

I would propose to add the issue to a team, and see who in the team is the actual responsible to the issue.

This would allow a two level coordination : When issue is found, the issue is assigned to the team. The leader of the team would then have the right to reselect the person of its team responsible for it at a second level assignement.

When running clashes to issues. Having just one person assigned to the issues make it appears as if you are electing that person to resolve all issues. We need to be able to assign multiple parties.

For coordination issues, there are always 2 parties involved, so multiple assigns to allows going through the issue during the coordination meeting and modify/assign to the specific team afterward. 

Multiple assigned to would allow better communication and tracking. Please implement! :)

We think this matter is very important to be added, we also need Phase to be a multiple parameter

Definitely want to see this implemented.  I've been creating multiple issues to tag each responsible party if there's more than 1 team member involved.  

Hi, I second that. This is very useful (make a checkable list like the Notify option) in case two ore more people are assigned an issue. In our case, two people manage a Revit model, so we should assign issues to both absolutely, no either. Thanks!