You can start create new project from scratch and setup all the credentials needed for a project.
1. Open switcher on top right corner to open list of teams and projects
2. Choose 'Add new project' to open the prompt below
Fill in name of new project and go to next step.
3. Setup an integration or token to add repositories to newly created project
Choose a service and it will lead you to settings form (if not yet set in team settings) or to a list of repositories fetched from server.
Choose repositories to add to your project and go forward.
Confirm that your project is created successfully