Editing a Pinned File
Step 1 – Tap the “Pin and Share” button.
Step 2 – Tap the menu icon to the right of the file you want to edit and then tap on “Edit”.
Step 3 – To change the expiration date, tap within the rectangle where the date is.
Step 4 – Select a new date and hit “Ok”.
Step 5 – To change the title, tap within the rectangle and start typing and when finished hit done.