What's the noun for marshalcy? Here's the word you're looking for.
marshal
(historical) A high-ranking officer in the household of a medieval prince or lord, who was originally in charge of the cavalry and later the military forces in general.
A military officer of the highest rank in several countries, including France and the former Soviet Union; equivalent to a general of the army in the United States. See also field marshal.
A person in charge of the ceremonial arrangement and management of a gathering.
“The collector was arrested by the marshal who claimed authority to do so without any writ or warrant.”
marshalling
(software) The process of transforming the memory representation of an object to a data format suitable for storage or transmission, which is typically used when data must be moved between different parts of a computer program, or from one program to another.
(heraldry) The arrangement of an escutcheon to exhibit the alliances of the owner.
“The day began with the marshaling of the troops at the Citadel, and here they were viewed by thousands of visitors who had traveled from their homes to bid their own good-bye.”
“He is working as an aircraft marshaller at the city's airport alongside personnel from Canada, Germany and the United States.”
“The crew chief for the parked aircraft was also observing the wingtip clearance and continued to signal to the marshaller that all was clear, giving a thumbs-up.”
“This affects the patients, staff and the external marshaller.”
“Without marshalls, audaxes still need proof of ride completion and that means cards to be stamped plus information points.”
“It was a fairly simple administrative system, built around the ducal household, which consisted of a group of officers including stewards, butlers, and marshalls.”
“Marshalls will lead the second of three Acid Test events organised by Business in the Community.”