From an actions menu of a project you can click on the More menu which lets you configure the following for each project:

Billing Rates: Every project can have a separate billing rate for the timecode or the user depending on your company's billing model. This rate is used to calculate the Bill Amount of the project.
Cost Rates: Every project can have a separate cost rate per user from which the Cost (Est), Cost (Actual) is calculated.
Access Control: You can add/edit users to play a specific role per project. You can also set object level security i.e what each role can do for a particular project.
Configure Apps: You can configure the State Manager and the timeout policy per App for a particular project.

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