Hi @ngand8629 ,
Per the B101 there are two standard ways the architect can be compensated: stipulated some or percentage basis. There is also a line for “other”.
The owner and architect negotiate the fee and then fill out the compensation in the appropriate line. I would assume the architect is likely being compensated either as a stipulated sum or percentage basis if they are using the B101.
I responded to another question about when the architect is compensated on a percentage basis awhile back if you’re interested in reading more about it: Architectural Fee - #3 by coachdarionziegler
Hope this helps!
-Darion