Poa registration for acceptimg gift

Daughter (D) wants to give Power Of Attorney in Favour of Father (F)

to ACCEPT 20% share of  Im-Movable Property at NAGPUR (Maharashtra) thru GIFT DEED

from Grandmother (G) due to Affection/Blood Relation. (Of course without Consideration Amount)

My Questions :

1. Is is mandatory to REGISTER this PoA in some SRO or simply get NOTARY

2. How much STAMP-DUTY will be levied for PoA (ASSESED MARKET VALUE of Property as  as 25 LAKH)