Once you have approached court for partition suit, court will seek statement of compromise from all defendants. If all defendants can not attend court, it can be done in multiple dates.
Any defendant can appoint power of attorney for statement, but they can not appoint you as power of attorney as you are plaintiff.
Compromise deed can be prepared on stamp paper of Rs.100/-. It is suggested to get the same properly notarized with proper entry in Notary Register. It will be better if you take help of efficient advocate, who can assist you well.