Synergy Items may have Planning Calendars attached only when an item has serial numbers linked to itself.

To do this process, go to the Item and click on the Edit button and click on the field labeled Serial Numbers under the Attributes section.

In an item card, you may go to the serial number links and you can view the day, week or month planning screen.

I prepared a presentation for an account wishing to use the Planning Functionality as an electronic whiteboard for scheduling his trucks.  Synergy Scheduling Board.