The level indicates the degree of responsibility and the impact on other positions.

Full : The responsibility is totally in the hands of the position- holder. Complete independence and authority in taking all functional measures.

Partial : The responsibility is partially in the hands of the position holder. The functional measures to be taken are to be shared with another ( usually lateral ) position.

Supporting :  The responsibility is attributed to another position. The other position-holder uses the results achieved by the incumbent to carry out the tasks within his / her responsibility.