If you have the appropriate permissions, you can create new Projects by navigating to the Projects landing page and selecting + New project located in the upper right.
Select Project to open a Create new project pane.
Name your Project, add an optional description, and select a location (space) where your Project will live. You can also change the default role for users within your Organization.
To set the default role that is initially selected for a particular space, go to the corresponding space settings and change the Project default roles.
Select Create to enter your new Project dashboard.