This guide explains how to configure an Impersonation Role to be used within a Quicklaunch meeting room.
1) Login to the Office 365 Exchange Admin Portal
2) Go to Permissions, then create a new Role Group "under Admin Roles click the '+' symbol to add a new role and enter the Name and Description 'Quicklaunch'.
Click the '+' symbol under 'Roles:', select ApplicationImpersonation, click 'add →' then 'OK'
Click the '+' symbol under 'Members:' and select your Admin User (the account used in the Meeting room), click 'add →' then 'OK'
Click 'Save' in the 'Role Group' window and you will then see the Impersonation role listed in Admin Roles. You can now use application impersonation with your admin user in Quicklaunch.