Maintenance Panel Access (Engineering Phase)
You start ripping open access panels, turning secured valves, and manually bypassing safety systems to help the engineer get more out of their systems when they take the divert or overpower action. Attempt an Acrobatics or Athletics check (DC = 10 + 1-1/2 × your starship’s tier). If you succeed and the engineer also succeeds at their check to divert, they can provide the normal benefit from divert to two different systems instead of only one. If the engineer instead succeeds at their check for the overpower action, they can choose four different systems to divert power to instead of three. In either case, no system can benefit twice from the same action.
If you fail your check by 10 or more, you overtax the ship’s systems without adding any useful capacity, and all engineer actions performed this turn take a –2 penalty.
Source
Character Operations Manual pg. 146