You can have someone hold the chicken for you. Then put a dab of the paste on your finger. Use your other hand to pull down the wattles and her mouth will open. Then put the paste in her mouth and let go of the wattles and the hen will swallow it down.Ok! Thanks how do I give the pea sized amount to them then? Do I put it on food and feed them it or do I do something else?
Some folks draw the paste up in a needle-less syringe and do the same thing. I do that when dosing with liquid wormers.
Another option is that you can put the paste on a piece of bread and give a piece to one chicken at a time. The problem with that is that the hen may or may not eat it. Or another hen might steal the treated bread and run away with it.