great that you find this extra useful.
Right, the mentioned permission is not implemented by default. You will have to add it manually. The best way for now is (updateproof), as Bob said,
- create a new policy template, say "Terrys Updater Policy Template" (important to choose a customized name here to keep it update proof)
- add the permission "system_perform_maintenance_tasks" to the template
- create a policy based on that template with that permission checked (again choose a custom name)
- grant your desired users mgr context access to that policy
You may also check the RTFM to find out, how to design this perfectly with user roles
In one of the next releases I will implement a suitable policy template in the package itself. For now I would say, I will give it the name "Updater Policy Template" then, so better not choose this name for you custom template. A description how to use it will be shipped with the package then as well.
Of course one might ask, why did I restrict widget access to users with sudo or these special permission? Answer: I do not think that version information should bother "normal" users, who even can not take action in case of necessary updates. Only admins should be able to see this widget. Of course you can control which dashboard will contain the widget - but the permission way seems cleaner for me, esp. if other permissions (e.g. for notifications) play along.
Please feel free to continue any discussions about Updater and its concepts. I am open mindend, and it is still a beta version.