Step 1 – Select the Journals Tab at the bottom of the screen. If you have no active filters then this brings up the list of all your Journal entries.

journals-list
Step 2 – Click on the Journal entry to edit. This brings up the edit Journal screen where you can edit any of the fields.

journal-edit-screen
Step 3 – To save the entry, press the return arrow at the top left of the screen. Your changes will be auto-saved.