Highlights of this feature:

• Allows additional attachment of featured status, better placement, bolding and attention getter listing extras to listings if not originally purchased at placement
• Admin controls whether to use this feature or not on a site wide basis
• Admin controls the number of days from listing start before upgrade ability is removed from a specific listing
• If a listing extra is already attached to a listing those are not choices to upgrade. Can only upgrade listing extra features that aren't already attached to the listing.
• Price of listing extras within the upgrade process are the same costs as in the initial listing placement process
• The number of days from the start of the listing when the listing is upgraded is added to the end of the listing.
• Only listing extras that are available to that user while placing a listing will be available for upgrade.

The number of days from the beginning of the listing until upgrade ability is removed from a specific listing is set here in the admin tool:

LISTING SETUP > GENERAL SETTINGS > UPGRADE PERIOD

As seen in the following screenshot:

The number of days from listing start the upgrade is available is a site wide feature that affects all listings that can be renewed. If the above is more than 0 (set to 0 to disable) that will allow upgrading to any listing type in the system.

Additionally you have configurations to additionally affect this feature on a price plan by price plan basis. Within the Listing Renew/Upgrade price plan item there is an additional setting as shown in the following screenshot:

The above allows you to reset the start AND end times of the listing after a listing has been upgraded.