To extend the closing date you may change the closing date it if you have the appropriate permissions. This however can only be done if the bids have not yet been opened.
To extend the publication date expand the properties section and click on the Edit link.
Click the dates tab and select a new date from the calendar picker
The closing date should now be extended.
The vendors widget will appear with an option to send vendor invitations with the new closing date.
The bidding close date will be extended to match the closing date.
All of the vendors will be highlighted red to show the invitations still need to be sent out.
Click the Send Invitations button and all of the vendors will change from red back to black.
