E-Publication provides a single link for each property and publishes your report to that web url. Whenever anyone clicks on the link they will view the most recent e-publication. The viewer then has the option to save the E-publication as a PDF on their computer.
To create, or update, your E-Publication simply select E-Publish instead of Preview/Save from Create Proposal.
NB: the next time you "E-Publish" you will replace the pdf at the end of the link.