The everything setting as its name implies filters nothing out from people in that Circle.The remaining two positions control the quantity of posts which appear in one's main Stream, but the algorithm controlling what shows has not been disclosed.
By that time, two core Google functions, communications and photos, had become standalone services.
It includes basic social networking services like a profile photo, about section, background photo, cover photo, previous work and school history, interests, places lived and an area to post status updates.
It also includes several identity service sections, such as a contributor and other profiles area that let one link their "properties across the web". Organization of circles is done through a drag-and-drop interface.
Another function of Circles is to control the content of one's Stream.
A user may click on a Circle on the left side of the page and the Stream portion of the page (the center) will contain only posts shared by users in that Circle.
In November 2015, Google Plus underwent a redesign with the stated intent of making the site simpler and faster, making the new features of Communities and Collections more prominent, and removing features such as Hangouts, Events and Custom URLs.