Every scene has a list of roles according to the basic settings. These rights can be changed if given the authorization. To do so, go to 'Members' and click on 'Rights of roles'. 

If the lines are grey, they cannot be changed with your authorization. The ones that you can change, the options are the following: 

• X – does not have the right
• A – has the right
• G – has the right and can give right to others

When you have completed setting the roles, click on 'Save'.