You can create the listings yourself if you wish.
For the Wismar coin, you can:
a. Go to this listing which is a similar coin: N#30715
b. Scroll to the bottom and click on the phrase “Dulicate this page.”
c. Then edit the appropriate fields:
Title (could be "6 Pfenning - Adolph Frederick")
Denomination - 6 Pfennig
Reference - KM #132
etc.
The descriptions can be left the same, but the reverse lettering needs to be changed.
d. Attach your photos
e. Edit the date table so that the only date is 1762 F
Any other questions you can refer here: https://en.numista.com/help/guidelines-for-the-numista-catalogue-141.html