>>*This guide already assumes that you are an experienced modder capable of making a fully working unit mod by yourself, if you are still learning consider joining Da Modding Den for learning basic and possibly advanced modding https://discord.com/invite/sW49MnP .*<<

1)First and foremost: You don't need to take anything from this mod.
You'll only need to be subbed and have this mod enabled for it to work.

2)The crucial part is to find the right WoC building and then assign the building's code to your custom unit, DO NOTE: the WoC building chains are located in the building_levels_tables you will NOT find these buildings inside the building_units_allowed_tables, let's proceed with a practical example.

3)So let's say that you have almost finished your custom WoC Marauders unit pack and only need to tie them to the building chains now, you might want to do the following:
-Go to db's building_levels_tables and type into the filter bar "woc" (without the quotes).
-Scroll down the WoC building chains until you are going to find the following building chains
wh3_dlc20_woc_dark_fortress_marauder_1
wh3_dlc20_woc_dark_fortress_marauder_2
wh3_dlc20_woc_dark_fortress_marauder_3

4)Now copy those codes and paste them in your mod's building_units_allowed_tables, it should look something like this:

-Your custom unique numeric ID -The building code -The custom unit code -The rest

ex.

0101010101 wh3_dlc20_woc_dark_fortress_marauder_1 MyAwesomeWoCMarauder
0101010102 wh3_dlc20_woc_dark_fortress_marauder_2 MyAwesomeWoCMarauder
0101010103 wh3_dlc20_woc_dark_fortress_marauder_3 MyAwesomeWoCMarauder

5)Once you are done just save and test the mod.

6)Once you are positive that your mod is fully working then proceed to upload it to the workshop and just remember to set this mod as a required item for your mod (Add/Remove Required Items).

And you are done!