The way that is documented in RRDB, it appears that they have 6 conventional DMR channels (non-trunked) and each channel only ever carries traffic for one TG. You could program these conventionally if that is the case. However, I'd consider the entry in RRDB incomplete, as no color code is shown (color code is not optional in the radios themselves). So, you also have an opportunity to note the color code and submit that information to RadioReference.
If any of those frequencies carry traffic for multiple TG's, then it that frequency would best be entered as DMR One-Frequency Trunking so that you could enter the TGIDs and associated alpha tags.