I think it's not possible to enable proning and crawling for reticulans, but i enabled running with new trainings in the reticulan mod
(although their walking and running animations look the same to me, but at least they move faster).
I have not checked martians, but it's not possible to enable running, proning or crawling for beastmen. The reason is that they lack the animation files needed to perform such actions (you can check it if you search for a folder named anims or something like that in the gamedata files, i don't remember the exact path right now).
It may be possible to create the missing animation files, but i guess it would require a great deal of knowledge about 3d animation.