As part of this section your organisation should have in place a starters, leavers and movers policy, documenting the steps you are completing as part of each part of the process.
A7.2 requires that each username and password for each device is unique,.
In the case of Mac devices you will be required to set up another administrative user and remove your one from the group.
For Windows devices you will need to ensure that each local admin account has unique password, the easiest solution to get this implemented is to look into LAPS.