Navigate to the Documents Tab.

Select the dropdown arrow aligned with the document.

Select Share Document.

Click the paper icon to copy the link.

After the hyperlink has been duplicated, the Sharing column will change from No to Yes, signifying that the link has been copied.

To disable a shared link, select the dropdown in line with the document.

Select Stop Sharing.

Share the link with the appropriate party.

Here's how to set the duration in which share links are valid.