How to accept delegation:
1. Open an Incognito window (Ctrl+Shift+N or 3-dot menu in top right corner > New incognito window)
2. Log into your Gmail
3. There will be an email in your inbox
4. Click to accept delegation
5. Click to confirm
6. Access to delegate account may take up to 30 minutes to complete
7. In a regular Chrome window, access your regular email
To access a delegated email account:
1. In Gmail, click your profile in the top right corner
2. The mailboxes you have delegated access to will be listed
3. The requested mailbox will appear in a new tab. You can have multiple mailboxes open at the same time and switch between them in the different tabs.