It is likely that the "Composted Chicken Manure" has quite a bit of biological activity in it.
You don't really need anything to start your compost pile, but it can't hurt to toss a little of the manure in your compost pile. Since it is ready to be used, your best use of it might be to just start using it in gardens or pots. It will continue to break down.
I would suggest looking for sources of uncomposted materials; things which are waste for other people. Food waste from restaurants or markets. Yard waste.
And you couple have various worms to help compost. Often I dump wild mushrooms I like on piles to see if they like it.
My composting toilets use both composting worms and dung beetles since the chambers are quite large and there is space on the periphery that they can work.
https://www.quora.com/What-are-the-advantages-of-composting-toilets/answer/Brian-Fey
Some other thoughts on waste:
http://www.bosquevillage.com/notes/index.php?title=Waste
Good luck!