Leaders speak for the group as well as themselves, so they build agreement on a core of values everyone can share while honouring diversity rather than demanding accord on everything. Shared values give people reasons to care, guide behaviour and ease decisions. Shared values are forged through dialogue, debate and participation, not imposed, and the leader holds people accountable to the values and standards agreed.
The graph holds this control, the 0 it maps to, and the evidence behind each claim, over MCP and REST.