Way of working involving a large number of bits and sequence of steps (5)
I believe the answer is:
mambo
'sequence of steps' is the definition.
The definition suggests a singular noun which matches the answer.
'way of working involving a large number of bits' is the wordplay.
'way of working' becomes 'mo' (modus operandi).
'involving' is an insertion indicator.
'a large number of bits' becomes 'amb' (I can't justify this - if you can you should believe this answer much more).
'mo' placed around 'amb' is 'MAMBO'.
'and' acts as a link.
Can you help me to learn more?
(Other definitions for mambo that I've seen before include "Quick Caribbean dance" , "voodoo priestess" , "Dance derived from voodoo rituals" , "voodoo woman" , "Latin American dance of Haitian origin" .)