Farmer BoB has a tutorial for fs22 that is very similar for fs25. Also you need to expand fruits and height gdms to those channels mentioned in his tutorial, but his method doesn't work, because it messes up with the deco foliage, so you need a python script...
Long story short, it is a lot to explain. Will make a tutorial someday, when my multifruit will be complete. ETA about 1-2 months imo.