How do hardmoney withdrawals work?

[Hoa Nguyen]

This may be a simple question, but have yet to find a clear answer. 

Got approved for an HM Loan, and it mentions that the construction portion of the funding will be held and construction draw requests will be sent accordingly. What exactly does this process look like? Do I complete work out of pocket and send invoices for reimbursement? Sorry first time going this route.