Describe who is involved in the impact. List the stakeholders that will support the impact. There may be stakeholders who will work against it. Also specify the stakeholders taking advantage or taking disadvantage even if they do not have power to influence the outcome.

Describe how the impact will be pursued.

In case you need to organise whos in a hierarchy then add additional whos as children to this who. Subordinate whos will then be automatically listed.

Typically this hierarchy is not relevant to keep maps simple.