user rights management in shiny application


I'm coding a shiny application with shiny dashboard. So, I create a menu on the left side with dashboardSidebar.
I would like several users could log in, and I want to give different rights to each user.
For example, the menu contains these items : item1, item2 , item3.
User 1 can access at alls items, user2 can access only item2 and item3, user3 can access only item3...

Do you know if a package exists to do this.?

(I saw some packages like shinymanager but it doesn't seem to be able to fine-tune the rights on each item)