Yes. As a member, you may purchase additional SIG memberships throughout the year. You may purchase by (1) Login to the Member Login Page, click on “Groups” on the top of the page, and then on the right you will see available SIGs to purchase by selecting “+Join Group”. Or (2), from the CIES website, click on the “Join a SIG” tab at the very top of the page, and select the additional SIGs you wish to join.