Multi-User Picker fields for Connect Apps

Hi, still in my first week of Connect App development. Our (Connect) App needs a field where users can select multiple users and save them with an issue.

The connect descriptor for app fields doesn’t appear to support user picker as a field type. (see Is there a reason for that? What other option do we have to allow a user to identify/save a set list of users onto an issue and then call a custom app web-item function?

Thank you

PS. The “Approvers” field (multi-user picker) created by JIRA Service Desk operates the same way our target connect app needs.

Hello, I have the same question here? Is there anything new about the user-picker field? I also need to develop an issue field module using Connect, but as values the field doesn’t support users.