Hello,
I am testing the new JSM functionality to escalate a ticket to developers, directly from the JSM project
I have seen in the documentation that developers with the role of collaborator in the project will be able to do this:
view issues, comments and attachments
add attachments and delete their own attachments
add internal comments to issues and delete their own comments
watch and vote for issues
view other watchers and voters
But... there is one very important thing, can I assign a ticket to a developer with collaborator role if he doesn't have JSM license?
Because I understand that no... and if so.... what's the point of escalating the ticket if you can't assign it to the person who has to do it? 
Thank you very much