Just go into the setup room and grab a view where you have a good view of your object, usually top, front or side. Then select the bone creation tool and start your way around the necklace. Go nice and slow and they should connect themselves to each other. If you don't want more bones make sure you deselect the bone creation tool...otherwise you'll have a mass of bones looking at you (boneyard!). Then go into different viewports to move them into place with your translate/pull tool.

Really quite simple when you get the hang of it...don't worry you'll do fine.

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