If you have a number of domain names you wish to renew at once, you can save time by selecting multiple domains at once from the 'Account Manager' under 'Manage Domains & Services'.
When on the 'Manage Domains & Services' page, click on the 'Show All' link at the top right hand corner of the domain list to display all of the domain names under your account. Then select the expiry date column to order your list by expiry date. It's then easy to select all of the domain names coming up for renewal, by checking the check box to the right of the domain name and complete your bulk renewal order by clicking the 'Choose An Action' drop down menu and selecting 'Renew Services'