Once you’ve got a signed contract on your listing, you’re ready to change the status. And the sooner the better. Once a contract has been signed, you have 3 days to change the listing status. Not only does it help to move your listing along, but it’s also part of the ARMLS Rules (section 10.7). To change your listing status to Pending, check out the directions below. Remember, to change a listing to Pending status you must be the listing agent on that property.
Under the Flexmls menu, click Change under the Add/Change category and select the listing

From the change screen, select Pend Listing (Under Contract)
Fill in the information about the transaction
Be sure to fill everything out accurately from your purchase contract, as this is how your listing will close.