Plugin Settings needed

This plugin really needs a setting menue with the following options:

assign this plugin to x user role or x specified user

It is an absolute NoGo that there is no way to assign the plugin to f.e. editors.
As it is now, we have to assign the Admin-Role to users just that they can use this feature.

There is no really officially confirmed way to assign the plugin to other rules.
To insert code snippets into the functions.php of the theme is dangerous.
My clients changed the site theme and deleted the old theme. So all modifications were lost.

Admins and Editors are not programmers so it is absolutely wrong to have role permissions defined by them or “open all doors to destruction”

Flamingo is not a Hobby-Plugin, developed in some shady corner.
Such a poor configuration is not acceptable for the use in a real-world-context.