The distribution function is used for the distribution of
capacity requirements and is part of a distribution key. It is made
up of a series of basic values, each consisting of a percentage
time value and a percentage requirements value.

The percentage time value defines a point within the duration of
the operation.

The percentage requirements value specifies the proportion of
the requirements which must be dispatched by a certain point in
time.

In the case of a discrete dispatching strategy, the requirements
are dispatched exactly at the specified points in time. In the case
of a continuous dispatching strategy, the requirements are
distributed equally between two points in time.