It is very simple to replicate the setup of another project in your account in a new project.
After clicking on Add new project in the project page, click in the checkbox next to Copy setup from another project. If you have more than one localization project in your account, choose the project from which you want to copy the setup.
The copied setup includes the project settings (that means any users that were set here as administrators or proofreaders too), the languages and the contributors assigned to these languages.