You can assign different project roles to different members of your team to give people the correct permissions and limitations to take actions in a project.

Creating a new permission is easy! From the project page, click Project Roles from the top right corner. 

This will take you to the main project roles management page where you can view and edit existing roles or create a new one entirely. 

Once you create your project role permissions, you can go ahead and customize permissions for each project. Simply click into the Project Settings of any project, then click the Project Members tab.