From Parallel Two-Faced Lines or other applicable formations.
Leaders Keep Busy 
  (Couples Circulate With The Flow) 
  as Trailers step forward to form a compact formation ("normalize") 
  and do the anything call.
  
 
 |   | 
 
 |   | 
 
 |  before Busy Single Wheel |   |  part-way  |   | after
  |   
 | 
   | 
Note: The original definition of Busy anything had the Trailers 1/2 Circulate 
  and then do the anything call.  Our definition uses "normalize" instead, and
  allows for T-Bone starting formations as shown below.
 
 |   | 
 
 |  before Busy Nothing |   | after
  |   
 | 
 
 |   | 
 
 |  before Busy Nothing |   | after
  |   
 | 
 See also Keep Busy [C3A].