Assuming you have "customanims" by _Jennie_ here is the file location to drag and drop the YCD files.

mods\update\x64\dlcpacks\customanims\dlc.rpf\x64\anim\ingame\clip_mp_.rpf


And the to put in FavouriteAnims.XML
<Anim dict="anim@a10" name="a10_clip" />
<Anim dict="anim@carradio" name="carradio_clip" />
<Anim dict="anim@whatasec" name="whatasec_clip" />
<Anim dict="anim@fog1" name="fog1_clip" />
<Anim dict="anim@fog2" name="fog2_clip" />
<Anim dict="anim@backcarone" name="backcarone_clip" />
<Anim dict="anim@backcartwo" name="backcartwo_clip" />
<Anim dict="anim@arby" name="arby_clip" />

