Starship Corporation

I tried in crew management the asteroid one! Had a hull breach and couldn't repair it instead lost a crew member during the sim

I had to go through the tutorial to figure this out.

step 1: get everyone into space suits during the first "standard operation" mission (or the Yellow Alert one). Right-click-hold with dudes selected (you'll get a radial menu).
step 2: close the door leading into the area so it sucks all the air out of the one room and not the whole floor. Left-click-hold on a door (the light will change color).
step 3: while 2 is occurring, get a technician outside the closed door. Seal the doors around him so you let as little air into the breached room as possible in step 4.
step 4: open the first door and send the tech in, seal it behind him again (again, minimizing leakage).
step 5: wait for the particle effects around the breach to stop, then move the tech over to the breach
step 6: wait for him to finish
step 7: unseal all doors

If the tech has a suit on, he should have more than enough air to finish the job.