I know that live tv via satellite still isn’t officially supported. However, the list of community supported tuners has a couple of DVB-S2 tuners, that work fine for basic tasks.
For example, the TBS6902 DVB-S2 dual-tuner is detected by Plex and you can select a satellite to initiate a scan.

Unfortunately, the Plex setup interface doesn’t provide options to enter required values Unicable setups. Plex can clearly load some of the DVB-S settings like the value for diseqc from the driver. Why not surface all the other values as well?
Is there a way to manually edit the tuner configuration by using a text editor somehow?