Don’t ask me what purpose the Genre field serves. I gave up on it years ago for Spinitron’s purposes. Everyone has their own unique understanding of what genre names means and own unique assignment of recordings. Without some consistency the data accumulated in that column I can’t think of how to use it.
But DJs and stations seem still interested in it so we still support it. The menu of genre’s you can choose in the spin entry form is set by your station management in Spinitron, choosing from the master list of genre names. If you think the 5 chosen for your station are not useful, maybe have a chat with management about changing that menu.
It is not normally required to assign a genre value to a spin, in which case you can ignore it and leave it blank. Station management can make the genre a required field - see 1 in the image below, in which case you have to choose from your station’s menu of genres.
If genre is not required at your station then management can set the field as hidable - see 2 in the image below – in which case you can hide it in your playlist options and not even see the silly thing ever again.
Spinitron doesn’t know what you actually played so it should export all the spins in playlists. You can uncheck the rows you did play during export or (and this is probably easier) delete them from the exported data after export.