If you no longer wish to be a member of an organization, you can choose to leave it. Please follow the steps below to do so.
First, navigate to the Organizations page by clicking on the menu at the top right hand side of your screen. Click on Organizations menu from the drop down menu that appears.
Click on Actions against the organization you wish to leave, and select Leave.
Note: Once you leave an organization, you will no longer be able to access your activity tracked within that organization. You will also not be able to rejoin the organization unless the organization owner invites you back in.