The way I have always don that is with the FMP24 batch file. make a copy and input the control channel frequency.
Usually all the defaults will work.
Now, start that batch file, it should lauch DSD. It should show your signal display. Now run the 1R batch file, arrange the windows how you like.
Everything from there is very much automatic. It will append to your frequency , radio files, etc. You can edit these files while DSD is running.
I never used unitrunker. DSD v 1.01 is what you want. that is the basic DSD+. It is worth getting faslane, that will update DSD+ and current base files. Quite easy with the zip file, back up your DSD working folder, place the zip file in that folder and do an 'extract here'.
Overwrite what files you extract and your DSD+ is current. I can't see this being any harder or easier than SDR Trunk or Unitrunker.