Heavy damage and underwater; can you assist?

[XenonSurf]

Hi,
so the baddest scenario has occured to me, I was too careless and got hit by destroyer shells. I had to crash dive, at some point the flooding was under control but I am stucked at 100 feet with a lot of systems damaged and destroyed.

Is there something you can do to assist repairs in SH5? Of course I understand that if most of your systems are at 0%, especially the pumps or E-machines, then you can just watch and die, but is there something you should or can assist, maybe something to order , e.g. re-direct the crew to prioritize on specific repairs or else?
When going in the subsystems, I notice that if I click on a square then a moving repair tool will appear. Does this mean the repairs will concentrate on that? Weird thing is: if I change the view and come in again then the repair tool has changed place, so my order was futile...

I'm playing stock SH5 1.2 + TWoS, but I think my questions also apply for the stock game only.

Thanks,