How to pppoe Mikrotik Groove A-2hn "ap-mode" not router

Hi, i´m newbie from mikrotik, i´m using server free in linux “brazilfw” add dhcp, nat, L7, Cache, bla bla bla… but now I have a one Mikrotik Groove A-2hn i´m need implement pppoe security. How to?
I just want the groove to AP and PPPOE only that.
i´m using 1 video but not found configuration.
http://www.youtube.com/watch?v=ipeJN0oyUa4


tnks all.

http://wiki.mikrotik.com/wiki/Manual:Making_a_simple_wireless_AP

-and-

http://wiki.mikrotik.com/wiki/PPPOE_Server

-and-

http://wiki.mikrotik.com/wiki/Pppoe_server_with_profiles