developing a false grip

i can't perform a false grip, is there a general way gymnasts develop false grips in their training, does anyone have any ideas?

Personally I did to many false grip pull ups till my false grip became painless. You will develop it pretty fast its just something you learn to handle it becomes painless, I'm also in gymnastics so we do heavy wrist stuff, static handstands so your wrists get use to all that stress on them.