zack Specialist

So on the transition from Open to whatever the next status you are going to is, you're going to want to set a Post Function in the workflow and use the "Update Issue Field" option. You can set the assignee on issue to a specific user here automatically.

If it is a specific user, you can do this is a post function on the transition where the ticket is taken.

The JEMH plugin is able to do what you're looking for.