Every City has one or more administrators. Logging in with an admin account will expose a variety of features that regular users don't have access to:

If you're logged in as an admin, you'll see an "Admin" button in the top right of the header menu:

Clicking this will expose the admin features:

The admin menu is on the left and organized into different areas of functionality. The features exposed to the admin can be expanded through the configuration of additional admin-only tools.