Step 1: Open up a blank draft template. In the view tab, turn
on the background sheet.
Step 2: At the bottom of the page right click on Sheet 1 and check
the Sheet Setup.
Step 3: Be sure to note the sheet size that you are using. Go
to that background sheet.
Step 4: Edit and add text boxes and callouts.
Step 5: Save the template into your Template folder.
Step 6: You will now be able to choose your custom template.