1. From the Partner level Accounts tab, search for the Account you would like to access and select View Details. If you are searching by email, you will need to start from the Users tab.
2. Click the Users tab.
3. Click the Invite User button.
4. Enter your name and the email address associated with your Partner Admin User then click Send Invitation.
5. You will be added as a User of the Account and will now be able to access that account from your Account Switcher (see next step).
6. To access the Account, click the dropdown in the top right corner attached to your name. Hover over the Switch Account dropdown and a list of all of the Accounts you have access to will populate. Select the account you would like to assume by clicking on the Account name.