By default, brokers and clients that are added to a project will receive notifications for activity within the project, including comments on building pages, and favorite or decline ratings on buildings.
To turn project notifications off, go to the project page then click the user icon at the top right of the page. (This icon will either be a photo you uploaded to LeaseUp, or your initials inside a circle.)
Click 'Settings' under the 'Account' section of the menu that appears. From the 'Settings' page, click into the 'Notifications' tab and uncheck the boxes for notifications you don't wish to receive.