The management cost

Time spent coordinating, resolving and reporting on the relationship.

The part

What it is

A rough estimate is sufficient and is far better than the implicit zero currently in most assessments.

Whose time it is matters: senior attention consumed by a partnership is attention not available elsewhere.

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.

Time spent
Hours per period across everyone involved.
Duration shared type
Whose time
Which roles, since senior time is the scarce input.
Role shared type
Estimated value
A rough cost, which is better than the implicit zero.
Money shared type