With the filter running, pour the bleach slowly into the return stream--that's where the water is coming back into the pool. Different chemicals are added in different ways. Usually adding a bunch of stuff all at once is not a good idea, and, with everything but chlorine, "less is more". IOW, you'll add LESS than you think you need of every chem but chlorine, because it's easy to add more.

If they gave you calcium flakes or some other calcium booster to add to your water, don't waste your time. It will just mess up your water. Pool stores regularly tell customers to add calcium to vinyl pools despite there being no good reason to do so. Calcium is for concrete or tiled, ie, hard-surfaced pools, not vinyl.

Carl