Vendor contact id - when create vendor contract, you are the client

Client contact id - when create your contract with the client

Defines how the Owner's Rep contracts with the Owner and who holds the vendor contracts. Advisory: Rep advises the Owner; the Owner holds all vendor contracts (Owner budget). Agency (Non-Bill Pay): Rep acts as agent for the Owner; the Owner holds vendor contracts; Rep does not handle vendor payments (Owner budget). Agency (Bill Pay): Rep acts as agent for the Owner; the Owner holds vendor contracts; Rep processes vendor payments (Owner budget). Principal – Fixed Fee Delivery: Rep holds all vendor contracts directly; the Main Contract with the Owner covers the full project scope; Your budget is used (primarily for closed-book arrangements). Principal – Transparent Billing: Rep holds all vendor contracts directly; the Main Contract with the Owner covers only Rep fees; full cost detail is shared with the Owner; Your budget is used (primarily for open-book arrangements).