New to modding need help

[juf.de]

0 - cows | 1 - sheep | 2 - chicken | 3 - pigs
Add - create layer | Substract - remove layer

select "Teerain info layer" in the top, then open "Terrain editing" window and at the bottom select specific layer and option, from above.
It's as easy as that, it helps alot to check the default maps (Sosnovka, GCV) for reference.

[farmerlad123]

I done it, when I clicked on Show Navigation Mesh all zones highlighted darker blue, choose 0 but when I was Subtracting I couldn't see the zone getting removed because still showed on map as darker blue- so I just Subtracted the whole cow zone, then re added layer and just Clicked Create Navigation mesh, just not sure if i use the right settings I think radius was 1.2, shape build mask (0), culling info layer (0). Is there a guide somewhere explaining all the different numbers?

[juf.de]

There sure is one or even more, but all i know of are in german, i recommend checking at fs-uk, the english speaking community is way larger there, then over here.