This is a more elaborate Pooja of Lord Shiva. Shiva has eleven forms of Rudra. In this Pooja all the 11 Rudras are worshiped. After the sthapana avahana etc., Laghunyasam is recited. Then Rudra Trishati is recited. Abhishekam is done to each of the 11 Rudras with all the 11 dravyas prescribed. Their 11 consorts are also worshiped . This pooja is performed by 4 pundits and Rudram is recited total 11 times – i.e. one recital for each of the 11 Rudras. It will be done in your name and with your sankalpa, i.e., the specific purpose for which you are getting the pooja performed. Only Pooja is performed and Homa, ie, fire oblations are not done.