Bert
The small tank on the engine is filled from the oil tank in the rear compartment of the boat. Not a reserve, but part of the system. If you remove the cap on either tank make sure it is back on tight.
For the livewells. You should have a lever that says open and close or something close to that. Should be located near the throttle shift on the driver side of the boat. Proably one for each well. To get water to stay in close it to let it out open it. To get water in, there should be a few switches on the dash. One may say aeration, this should pump water in. Another will be recirculation, this will oxigenate the water in the livewells, not add new. You may also have a pump out. This will pump water out of the livewells. Every system is a little different and couold be labeled slightly different. I had a 2000, 929 and I am trying to do it from memory. Best thing you can do is put the boat in the water and experiment.
Good Luck,
Steve