If you need to update any personas from your persona bank after they have been created, it's a really quick and easy process. Here's how:
1. Navigate to your account in the top right hand side of your dashboard
2. Click on the dropdown and go to 'Settings'
3. Navigate to the Branding tab and scroll down to the Persona Bank section
4. Now, click Edit next to the persona that you would like to update. Don't forget to click 'Update' once all changes have been made.