Power take-off for engine used in multi-function system and load management of such system

An apparatus comprising:

• an engine;
• a power take-off comprising a power take-off port operatively connected to be driven by the engine and connectable to a corresponding load service;
• one or more additional load services operatively connected to be driven by the engine;
• a PTO modulator coupled to the power take-off and operable to modulate power drawn, from the engine, by the power take-off;
• one or more load-service modulators respectively coupled to the one or more additional load services, each load-service modulator operable to modulate power drawn, from the engine, by its corresponding additional load service;
• and
• a controller configured to control the PTO modulator and the one or more load-service modulators to thereby control the power drawn from the engine based on a detected condition of the engine and a priority as between the power take-off and the one or more additional load services.