Sub-charter

noun
1.
a document, issued by a sovereign or state, outlining the conditions under which a corporation, colony, city, or other corporate body is organized, and defining its rights and privileges.
2.
(often initial capital letter) a document defining the formal organization of a corporate body; constitution:
the Charter of the United Nations.
3.
authorization from a central or parent organization to establish a new branch, chapter, etc.
4.
a grant by a sovereign power creating a corporation, as the royal charters granted to British colonies in America.
5.
Also called charter party. a contract by which part or all of a ship is leased for a voyage or a stated time.
6.
a tour, vacation, or trip by charter arrangement:
The travel agency is offering charters to Europe and the Caribbean.
7.
special privilege or immunity.
verb (used with object)
8.
to establish by charter:
to charter a bank.
9.
to lease or hire for exclusive use:
The company will charter six buses for the picnic.
10.
to give special favor or privilege to.
adjective
11.
of or relating to a method of travel in which the transportation is specially leased or hired for members of a group or association:
a charter flight to Europe.
12.
that can be leased or hired for exclusive or private use:
a charter boat for deep-sea fishing.
13.
done or held in accordance with a charter:
a charter school.
noun
1.
a formal document from the sovereign or state incorporating a city, bank, college, etc, and specifying its purposes and rights
2.
(sometimes capital) a formal document granting or demanding from the sovereign power of a state certain rights or liberties
3.
a document issued by a society or an organization authorizing the establishment of a local branch or chapter
4.
a special privilege or exemption
5.
(often capital) the fundamental principles of an organization; constitution: the Charter of the United Nations
6.

the hire or lease of transportation
the agreement or contract regulating this
(as modifier): a charter flight

7.
a law, policy, or decision containing a loophole which allows a specified group to engage more easily in an activity considered undesirable: a beggars’ charter
8.
(maritime law) another word for charterparty
verb (transitive)
9.
to lease or hire by charterparty
10.
to hire (a vehicle, etc)
11.
to grant a charter of incorporation or liberties to (a group or person)