Returning/Renewing
Just like with OverDrive, your loans will expire once the due date comes around and the item will be returned for you. You can also choose to return early if you finish it before its due.
To Return, go to Shelf --> Loans --> Find the loan you wish to return --> select Manage Returns --> Return Early
To Renew go to Shelf --> Loans --> Find the loan you wish to renew--> select Manage Returns --> Renew Loan
You can only renew an item that does not have a waiting list and it will not let you renew until 3 days prior to the due date. 
The Renew Loan option will be available 3 days prior to the due date.