Within Teamwork Projects, you can integrate your site with Box.com, and then add the integration to individual projects.
To do this, go to the Settings tab in the top right corner of your site, and select 'Integrations.'
In the Box.com integration pane, click the 'Configure' button to get started:
You can choose to enable one Box.com account for your entire site, or configure individual accounts for each project:
You will be prompted to log into your Box.com account to connect it to your Teamwork Projects site.
After connecting successfully, you will then need to choose the top-level folder you want. By clicking the 'Choose Folder' button, you will be able to browse the existing folders within your Box.com account, or create a new folder.
Once these steps have been completed, the Box.com integration will be ready for you to use. You will need to enable Box.com within the integration settings of each project you want it available on.
Note: Only site administrators can access the site settings to enable the Box.com integration on the site.
For more information see: Enabling Box.com integration on your projects