This is a very basic question but one ive not worked out nor found.
When doing a duty mission for it to be a criticle success Do your officers need to have all of the green critical success traits on them, Or do you need officers to have 1 or 2 of the traits until you have enough to cover each trait?
Assignment 1 for a crit success required Aggression Resilience and Team work for each slot.
So do i:
A: Have to have an officer with all 3 traits?
B: Cover all 3 using the officers avaliable, like Officer A: has Aggression and Resilience
Officer B: has Teamwork.
Neither, actually. It's cumulative - the more you match, the better your chances. For example, your example B, where each doff covers one trait, you'd get the same chance if you had three doffs with Teamwork and none of the others. (Sometimes different traits are weighted differently, that part's not easily visible on the player end).
Also, just higher quality doffs give better crit chances. Sometimes it's better to pile in three purples with no critical traits than three hand picked greens with two traits each. You also get higher CXP the better quality doffs you use, which can really spiral out of control on some assignments (I've seen 5,000 CXP crits on a couple missions).
You almost have the right answer. Each assignment has a base Critical Chance (which varies from mission to mission). You can increase the chance of each type of outcome based on the skills on the DOFF you assign. So, in the case you described, your DOFF increases critical chance by a certain amount for each of those traits they posses be it 1, 2, or all three. The quality of the officer also directly increases the critical chance based on White=0%, Green=5%, Blue=10%, and Purple=15%.
So idealy the more officers you can slot with the critical traits (and you can have more than one officer with the same trait) the higher your chance to crit. Keep in mind that you will also want to pay attention to the other percentages, especially failure, and disaster percentages. Just because someone increases your critical chance a lot doesn't mean they won't also increase the bad percentages as well (traits that are usually colored red).