The Multi-Composite Chart can be compared to a Composite Chart, but it is not calculated for two but for three or more people. It is supposed to give information about the respective group of people. Each planet of the multi-composite chart is placed at a "middle" position which results from the natal positions of this planet in the natal charts concerned.

Like the Composite Chart, the Ascendant, MC and houses can be calculated with two different methods: the "midpoint method" and the "reference place method".

The calculation of the composite planets can follow two different methods which we call "Multi-Composite" (or "Midpoint method") and as "Multi-Composite 2" (or "Centre of gravity method"). A more detailed description of both techniques can be found in this article.