I can share tips to help you change the master admin of the Tsheets account, @smmoon.
If you have access to the current master's admin info, you can use it to change the master admin role. You can also ask him/her to change it for you. If the account is integrated with QuickBooks Online Payroll, you'll need to sign in as the current master admin.
The method will vary if you're going to invite a new user or choose an existing one to become the master admin.
In QuickBooks, go to Settings and select Manage Users.
If you're going to invite a new user, click Add user and select Company admin as the user type. Then proceed to this article for the next steps: Invite a new user.
Thank you. We don't want to change the QB master admin, we would like to change the Tsheets master admin.The employee tried several times before she left to change the Tsheets master admin but it kept telling her to change it through QB which she was unable to do as she wasn't the QB Master Admin. I've tried the chat function on Tsheets but that just brings me back to the forum, so I'm posting another question as you suggested earlier.