Via the Organisations option in the menu you can go to your organisation page. At the bottom you will find a section called Team members. Here you can see all colleagues who have access to Manage Yourselv and configure what they are allowed to do within Manage Yourselv.
Using the plus icon you can invite new colleagues to collaborate in Manage Yourselv. Using the pencil icon you can adjust the permissions of a team member and you can also remove a team member.
The eye icon means a colleague can view that section
The plus icon means a colleague can add items within that section
The pencil icon means a colleague can edit within that section
The trash icon means a colleague can delete within that section