Here is a copy of the Harmony Manual
Images of Install tips from the Video:
Easiest way to Attach the Legs
Where the curved and straight legs attach
If something is not exactl like in the manual, like a leg being spaced out differently please just install them where the holes are placed on your model. Some sizes have slight variations of where the install legs are placed. This is correct for your model.
Watch this Video on how to Assemble the bed:
Harmony Operational and Tips Page: