As the GM, I will be playing the roles of Black and his lieutenants as well as that of Integra. If you create a character who is part of the Resistance, I will be contacting you to have the character run jobs with other players who have Resistance-allied characters. In order to complete the mission, you just have to come up with a plan and post your character's actions.
Alternatively, you can contact me about a mission at any time. Just let me know which lieutenant you're approaching and I'll come up with an appropriate mission.
Below is a list of Black's trusted lieutenants, for your reference.
Jacobs
A soldier and a veteran before the nuclear war, Jacobs is a large, grizzled man whose enthusiasm has not been dulled by age. He's in charge of training new recruits as best as he can and organizing assault missions, rescues, and raids. He's also responsible for outfitting resistance members for their missions. He's coarse but kind, and only wants to see the Resistance succeed.
Illyana
Having lived most of her adult life as a wanted criminal, Illyana is responsible for sending scouts into the city to map ISG patrols, plant listening devices, and other stealthy activities. She is caring, but impatient, with a sharp tongue. Her loyalties are often questioned, as she first moved into the Bunker to escape ISG patrols, but Black's faith speaks volumes for her.
Donovan
Donovan is responsible for keeping track of the Resistance's network of contacts, and thus works closely with Illyana. He often requires an escort when he goes to the surface. Donovan is smooth and charismatic, especially compared to the other two.