How do I change my secondary email in Gmail?

You can change your secondary email in Gmail through your Google Account settings. Here's how:

1. From the main menu on the left, select Account (or Account settings).
2. Click Profile and then Contact info.
3. You will see the Secondary email address listed. Click on it to update it.
4. Enter the new email address you want to use.
5. Click Save.

This process will update the secondary email address associated with your Gmail account.