You can add a new project by going to Projects → Add project.
Or by using the Quick Add button → Select project:
Or by going to Clients → Select a client → Projects → New project.
Once any of the two buttons is clicked, a pop-up with the basic project information will show up. From here, you'll be able to:
NOTE: If you've saved a project template that has tasks with dependencies between them, the Reschedule Tasks field will allow you to set the project start date so all tasks are scheduled in accordance with the dependencies set.
NOTE: By default, only admins can add projects. Project managers and regular users can add projects as well, only if one of the admins goes to Users: