In comparison to the Jedi Order, the Imperial Knights are built around being a military organization first and foremost. Their means of recruitment are far more draconic, inscripting those with force potential into their ranks regardless of their age.
General Ranks
Trainees who have proven themselves gain the rank of Squire, meaning they can go out into the field. Squires that prove their worth are giving the rank of Imperial Knight. Knight Captain was the rank given to Imperial Knights of exemplary skill, a rank that would make them the default leaders on missions leading other Imperial Knights.
Chapter Masters
Chapter Masters was a limited rank only reserved for five Knight Captain within the Imperial Knights. They were the leader of the Imperial Knights presence within one of the five Imperial Factions (Domain of Anaxes, Imperial Bastion, Imperial Board of Mofs, Imperial Council, Rimward Pact). Their job was to uphold the laws of each faction, maintain order and be the eyes and ears of the Knight Commander.
Knight Commander
The leader of the Imperial Knights that oversees everything and has final say on anything within the Imperial Knights. The current Knight Commander is Irata Manat.
Outposts & Chapters
The Imperial Knights have multiple strongholds within imperial space. Knight Outposts make up the majority of these, serving as a place of training for the Imperial Knights. They are run in a similar way as other military outposts and while they offer some means of education it is primarily around law and tradition. Chapters are the much larger strongholds of the Imperials, one located on each of the Imperial faction home planets with the sixth serving as the headquarters of the Knight Commander.