Freeradius Groups and Linux Users

[Samuel TAILLET]

Hello,
I have 2 small questions for the ML:
1) when using the auth radius under Linux, I'm still require to create
the account on the machine? because I can't do otherwise if it does
not work.

2) I can't make groups, such bob has the rights to log on Linux, Ted
on Linux, Unix and Fred on The Switch is it possible?

Thank you in advance and a + +
PS : excuse me for my English level