If a binded command is specified and the argument option is enabled, the player will be able to specify arguments by executing the command followed by some text, example: /example arg0 arg1 arg2 ...
You can also specify arguments in the /trmenu open <menu> <player> arg0 arg1 ....command, in the open: <menu> arg0 arg1 ...action and even change them through the menu with the set-args: arg0 arg1 ...action.