I use x52 pro. HOTAS. On the left hand throttle there is a little roller wheel. I have engines and shields bound to that. Roll it one way I get pips to shield roll it the other way I get pips to engines.
The main trigger button on the flight stick has two trigger points. The first position puts a pip to weapons the second position fires weapon.
I do not have the "balance levels" bound as its useless.
I try to maintain high energy levels in all systems, it is not just about how many pips are on but how much energy is stored.
I always try to have enough stored in engines for at least one boost. if the tank is low.. more pips to engines.. I find I don't often need Full pips to engines to do this... once the tank is full pips are better in shields and weapons.
You DONT need full pips to engines when running away.. I've seen this said many times but its not true, just make sure you have enough stored for one boost, then FA goes off.
If your shields are gone, max pips to shields. However if you have the target under your guns and he isn't hitting you - max pips to weapon and just have the spare pips in shields.
If taking massive damage all pips to shields. If you have full shields, pips are better in weapons, or used to top up the engine boost tank.
If I have any red shield rings... more pips to shields..if damage rate is light you don't need many.
As i am usually firing lasers, if i'm shooting, I want max pips to weapons. Once you loose the target see wish of the other two systems needs help, and take 2-3 pips of weapons, take more if things are bad.
I know people use voice attack for this. but its just way too slow for me, and I would have to be talking constantly. I could be at that distress signal for 40 minutes - that's a lot of talking.
same with flight assist it's on and off so fast and frequently you can't use voice attack for that.
VA is good for landing gear and saying "Put the kettle on Sally" and that's all.