1. Download zip
2. Extract zip and insert into resource folder
3. Add line to server.cfg line: > ensure myfoldername


Add props into your fxmanifest.lua:
Insert into your fxmanifest.lua > data_file 'DLC_ITYP_REQUEST' 'path_to_props/ar_furniture_02.ytyp' 
* In this case the path_to_props/name_of_your_ytyp.ytyp is the path to the .ytyp file and his name.