Use external expertise to build internal capability
Specialist support can help a team address work it cannot yet do well. The engagement should also make ownership clear so that the founder does not become the coordinator of every handover.
Define the problem and authority
Agree the business problem, the internal owner and who can approve changes. Make dependencies on other teams visible.
Plan for the team to carry the work
Capture decisions, standards and operating knowledge in a form the team can use. Review whether the work leaves leaders better able to act.