Different roles have different type of access to feedback management tools:
Subscription Admin, Admin:
can manage users (add, invite, delete, lock, provide access to feedback management tools)
edit insights and ideas
submit insights and ideas
edit public descriptions
invite members, observers
add comments
Member:
edit insights and ideas
submit insights and ideas
edit public description
add comments
invite members and observers (if the respective prmission is granted)
Observer:
submit insights
Find out more about managing user roles here.