To add a project document:
From the left-side navigation, click the dropdown menu
In the dropdown menu, select the name of the project that you want to add a document to
In the left-side navigation, click Documents
On the Documents page, click the Add Document button at the top-right corner of the page
Next to Attach a new document, click the Select a file button
Select a file that’s saved to your completer to upload it to Documents
Optionally, enter a Description
Click the dropdown menu under Shared with to select one of the following options: Company admins only, Company members only, or Company members & project workers
When you’re finished, click the Save button

Select a project, click Documents, then click the Add Document button

Click the Select a file button to upload the document, add an optional Description, click the Shared with dropdown to control document access, then click the Save button