Sale of Property With Pending Litigation

Hello, my father has some plots in Ooty which is currently on a dispute with his brother. The name of the suit is Original Suit. We lost in sub court and appeled in District Court. Its a joint Property. Now my question is 1) Can my father sell his share as there is no injunction or any order from the court which has restrained the sale. 2) Can he give power of attorney to my name so that I can initiate the sale. 3) His elder brother is threating that he will appeal in High court even if he loses, his ultimate aim is to grab the entire plot since we are staying away from the place. 4) Any legal possibility to sell our share alone as there is no injunction or orders from the court.