1. Click 'Account Members' from the left navigation.
2. Select the name of the member whose app you wish to update.
3. The member's app will open in a new tab. Select App Settings from the left navigation.
4. From here, click on "Custom Fields"
5. Then, click on the 3 dots to the right of the link that you wish to update:
6. Then, click "Edit"
7. Paste the new URL into the value field
8. Click "Save" once the new URL has been entered.