1. Create a folder inside the "Tracks" folder with the name of the track, like "Baku Street 2016".
2. Put the .wad and the .dat (and .gpi or loading screen if you want) in that folder.
3. Create a file called "settings.ini" with this lines and fill them with the data of your non CSM track, example:
[settings]
name=Baku Street 2016country=Azerbaijan
year=2016
event=F1
author= ToJepo
adjective=Azerbaijan
wad=Montreal2001.wad
dat=S1CT08.DATloadingscreen=
bik=
gpi=2016-Baku.gpi
uid=
Laps=
4. Now you should be able to choose it from CSM