authentication Required

on the configuration sheet of the APs, the portion for authentication required[/u:2dw2gzej] is enable and the next portion is [b[u:2dw2gzej]]configuration source[/u:2dw2gzej] in which we have
SM
BAM
BAM+SM
and next is the server address.
now what i want to ask if i check BAM only how will the SM work with the AP and the BAM server. i was trying to figure out how this process works since i already know how BAM+SM work

SM requests access
AP passes request to BAM
BAM authenticates
BAM send authentication to AP
AP allows SM access

thanks for your response. it is wonderful having you online and i think you have been of great help to me since i entered this forum.
thanks once again