I'd like to group a bunch of custom fields into one section in an existing page (ie, have a new heading in the list of existing headings in Accounts). Can this be done? Thanks for your advice!
Absolutely! Head to the page layout for your object, Setup > Customize > Accounts > Page Layouts, edit the one you want to, then look up top in the fields area. You'll see Section, just drag that down into the page!
