Projects and their entities in TeamCity can be configured:

Configuring Visibility

The Configure Visible Projects pop-up on the Projects Overview page allows managing projects display.

An individual project can be added to / removed from to the Projects Overview page using the "eye" button on the Project Home page: 

Note that if a project has archived subprojects / paused build configurations, they will also be displayed on the overview page and will be marked correspondingly.

In this section:

See also:

Concepts: Project | Build Configuration