Originally Posted by
ColonelElibas
The decision to create a new Space Marine Chapter is the responsibility of the High Lords of Terra.
I believe the process of creating a new Space Marines Chapter relies soully on Explorator Fleets. If the exploration finds a planet both the Inquisition and the High Lords of Terra believe to hold a good, pure stock of capable warriors that would accept Geneseeds, thus begins the process of creating an entirely new Chapter.
The New Chapter's Master would probably stem from an existing Chapter closeby, thus also providing a template on how the Chapter is structured and trained based on an already existing codex. Overtime there might be changes to this codex and thus making the Chapter truly unique.
From there the Chapter would have to be recognized by the Administratum and Tech Preists of Mars in order to create a warp-traveling fleet.
It's basically:
1.Exploration fleet find potential Chapter World.
2.High Lords of Terra and Inquisition approves - Imperial culture assimilated into World's culture, despots either killed or kept in power.
3. Neighboring Chapter oversees Chapter Master and potential recruits, adopts their Codex and structure.
4. New Chapter being created. Tech Priests and Administratum recording location, strength, fleet-size, and surrounding systems.
5. Administratum issues Imperial Guard Auxilleries and PDF forces to accomodate Chapter.