You will have the opportunity to upload your spec sheet- a list of the products and manufacturers used in your project- during the creation of your project page. However, you can also add a spec sheet (or two or three) to an existing project. To do so you must be signed in as the administrator of your firm.
To upload a spec sheet go to the project page to which you wish to upload the list. Click on the green button on the lower left hand side of the page, next to where the spec sheet will appear on the page.