The use

What it was actually used for.

The part

What it is

Recorded, so that a pattern of it being used for planned work rather than reactive work becomes visible.

Where it is consistently unused, the allocation can be reduced — but that should be a finding rather than an assumption.

The smallest level

The attributes it carries

Each attribute is one of the framework’s shared types. What a date is, and how it is written, is defined once for the whole model — the note here says what it means in this particular place.

Used for
What the reactive capacity produced.
Text shared type
Genuinely reactive
Whether it responded to something unplanned.
Choice shared type
Utilisation
How often the reserved capacity was used at all.
Percentage shared type