Read Only Permission in Tasks - Planner Use in Teams

Hi, 

I am using Planner within Teams and I would like to add a crew of employees as view only guests to our planner. The hope is to give them a role that would be unable to edit the task notes, checklist items within the task, mark tasks as complete, delete tasks, etc. Since it is quite cumbersome to frequently transfer all tasks in our planner to another Team, I think having a view-only access role would be very beneficial to many teams.