You can add notes and images to your transactions within the account:
Click on any account
Click on Transactions
Select the Transaction you wish to edit and pull up the transactions detail page
Click on the appropriate icon for one of the following:
Add Notes
Add Images
Follow the on-screen prompts to update the transactions
Close the transaction detail page (or in mobile, tap the < )
Any notes and images attached to transactions will be accessible on all devices when you log into 1st CCU Anywhere in the future.