Open in Customizer and choose which letters you want to use. There are options for size, font weight, and whether to join the initials with a heart shape. Create an embossed monogram by opting for a backing on your pendant, then swapping the filament midway through the print.
Print this with "standard" print settings. They print well on rafts.
If you want to print a pendant with a backing as a two-color print, wait until the backing is fully printed and the letters start to be printed, then swap out the filament.