PLUS loans begin repayment no later than 60 days after the final disbursement of the loan. Interest accrues on the PLUS loan from the date of the first disbursement. Most lenders will sell the loan to a secondary market just before repayment begins. You will receive a coupon book or monthly statement depending on the secondary market. You should always try to borrow all your student loans from a single lender.
Most lenders sell their loans to secondary markets.
By using the same lender for all of your PLUS loans, you can prevent the loans from being sold to different secondary markets and avoid multiple repayment schedules.