To assign different authorizations and views to the existing roles, you must go to role management. To do this, go to your team by clicking on the coat of arms symbol. Then click on "Members" and then on "Roles". Then scroll down and select the "Permissions table" button.
Here you can edit everything by "checkmarking". The view is divided into three sections, the top one explains the permissions the roles are allowed to have. The 2nd section regulates who is allowed to see what and the 3rd part defines who should be shown where.
Editing the permissions table is only possible with a premium membership.