Mortgage manager Resi Home Loans is putting systems in place to take on delegated underwriting authority for loans financed by its primary funder, National Australia Bank's wholesale loan servicer Advantedge.Advantedge has been a strong advocate for delegated underwriting authority, which means that mortgage managers and brokers can approve loans. Its view is that licensing under the National Credit Act gives intermediaries the standing to take on more responsibility.The benefit from the wholesaler's point of view is that it can be more flexible; it can use brokers to meet changes in demand.Resi's newly appointed chief executive Lisa Montgomery said the benefit from a mortgage manager's point of view was that it streamlined the approval process.Montgomery said: "We work within parameters set by the funder but it will cover 95 per cent of the loans we write. We can give a conditional approval at the point of sale, put the application straight into our system and manage the approval ourselves. We get more control."Resi has discussed a similar arrangement with its other funder, ING Direct, but no change has been made to that arrangement.Montgomery has worked at Resi for a number of years running sales, product management and marketing. The role of CEO, which she has taken up, was created after a recent strategic review.Resi managing director Peter James will continue in his role.