Allowing users to shutdown their machines

Hi,

I currently have foreman version 3.3.1 installed and would like to enable users to login to the web interface and control power to their machine.

Under roles I see power_hosts, view_hosts, however view_hosts grants them access to things such as:
Monitor hosts statuses overview
Jobs
tasks
content
and on the hosts page provisioning details

Is it possible to lock this down further?

Many Thanks,
Tania