One's may want to keep an eye on a specific plan or on an initiative one is not directly involved in. This can be done very easily with the "follow" option via a bell-shaped icon in the top right corner of the item's form.
Different ways to follow can be chosen from : specify whether the initiative or the plan should be added to your news feed available on the homepage and/or if e-mail notifications should be sent when the status of the initiative changes or when a new initiative is submitted on the "followed plan".