You can edit the fields within the Bio box (top left) on the Contact Profile page.
Steps
If you find that you don’t have permission to edit a contact - it might be because of the permissions
Go to the Contact Profile page
Click Edit Bio
You arrive on the Edit Contact page
By default, the first tab is open
Click each tab to display the fields within that Form
Edit the fields in the Form as necessary
If there are additional forms you want to add to this contact’s bio, follow these steps to complete additional Contact Forms if required
Scroll to the bottom and press Save
You arrive back on the contact’s profile