[ahaseurus2000]

when more than one compartment is flooding, post your repair crew to the one that is flooding fastest (the smallest time above the X symbol). and remember, the time on the repair icon may only be how long to stop further flooding but not to remove flooding. if you select the compartment to show it's information, then scroll down in the info area (bottom-left corner) you can see the time to recover.

If your damage control is full, post crew members in the compartment itself.