A Delegate Circle with its Domain is a "bottomarchy." This means it serves multiple Delegators (compared to Teams which have only one Delegator, defined by the Hierarchy of their purpose.)
Delegate Circles are about making Governance, no actual work (Operations) happens in a Delegate Circle. Implementing or adhering to what was decided happens in the various Teams or Work Groups the Delegate Circles serves.
As with every other Team accounting for a Domain, VIPs can be also be assigned a Delegate Circle. Every Delegate Circle can self-organize how they handle their VIPs as long they are handled and it’s documented, for example:
Make it part of recurring Governance Meetings.
Have a person that has the duty to facilitate governance outside of meetings (per VIP or in general).