As you can see from the images below I have the "Submit for Approval" button activated on my Quote page layout, but then when I go to the actual page of a quote that button is no where to be found. Can anyone help me with this problem?? THANKS IN ADVANCE!
Navigate to the Mobile & Lightning Actions section and check for a submit for approval button then drag that into the 'Salesforce Mobile and Lightning Experience Actions section (not the buttons section).