The description ELAC gave in #125 does not apply at CSA. It is a completely different system graded from A-D. Foreign Captains automatically enter at C which only limits who you can fly with as there is a similar but more graded FO scale. Basically you can not fly with a fresh FO. After one year on the line you are given another line check to upgrade to a D Captain. In most cases though you will not be able to let the FO land. This is a very simplified explanation but that is it in a nutshell. You will always be what you are calling a "Full" Captain here but generally you will never be the signing Captain, at very least until you finish a full year and move to the D scale.