Mount the wrought iron arm to a load-bearing structure, such as a wall or sturdy post. Use bolts or screws in accordance with the design of the wrought iron arm.
Hang the chandelier chain from the wrought iron arm.
Attach the central fixture of your choice to the other end of the chandelier chain. The fixture can be any shape or style you prefer, just as long as it is strong enough and large enough to hold all of your clamp lights. Fixtures smaller than 20 inches in diameter are best for smaller rooms, while those between 20 and 30 inches in diameter are best for larger rooms. The fixture should hang from the end of the chandelier chain, or it can be hung on a higher link for greater height.
Attach the clamp lights to the central fixture. Be creative with your placement and positioning of these lights.
Feed the power cables of the lights up the chandelier chain and along the wrought iron arm. Run them together down the wall or post and plug them into a main power strip. Use extension cords, if necessary.
Plug the power strip into a wall outlet, preferably one on a circuit with a light switch or dimmer.