Hi Ryan,
The way I do it is to note the RA and DEC values of the initial target, and edit the values manually in their boxes as the new "target object". From then, a GOTO should take you where you want to be, with a plate solve to confirm it.
Note the numbers down (or you can use astrometry.net to plate solve your images) so the next time you want to add more sub images, you can simply use the same coordinates.
Regards,
Chen