If I understand what you have done, is you took your pictures of their cruise compass all on the same date (say March 10), and you want to have them ordered with the photos taken on their actual dates (say March 2, March 3, etc.)
What you may want to try, is to change the date on the pictures of their cruise compass, to match the date of the pictures you want them to display with.
I use Apple products, but one of these methods may work with your Galaxy. On my iPhone, if I swipe upon the photo, it gives a basic list of metadata. On mine, it gives me an option there to adjust the date and time of the photo. If you have that option available on Galaxy, adjust the date of the cruise compass photo to the date of the photos you want it ordered with. Then, when you sort on date taken, or date modified (depending on how it works on your Galaxy) they should be in order.
If your photos app doesn’t give you the option to modify the dates, you could look at an app like EXIF viewer. It will let you modify dates, as well as many other attributes in photos.
Hope one of these works for you.