Install the dispensing pump in a place that allows for easy access and also within hose reach of the cleaner that you will be using. Setup the pump based on the amount of dispersion you need. It may be trial and error until you get the right flows to keep drains and traps free and clear.
Apply drain cleaner / BioOne to slow drains and free flowing drains during times of lower water usage. Completely stopped drains should be cleared prior to applying your drain cleaner / maintainer.