PermissionEX Help

Can someone send me over a command please for PEX.
I need an in-game command that i can use to give a individual user a permission.

I’ve tried stuff like /pex user {uuid} add world
and etc however it doesn’t work. Please help

/pex user [playername] perm [perm] [true/false]

Have a look there ^

How can i give permissions i made trainer default and they get the tag but i cant get anybody to get some permissions