Dear Querist,
Since the POA is for selling your property, you need to specify the Schedule of the Property. Type the POA in plain A4 sheets and to be signed by you in all the pages and to get attested by the Indian Consulate General of your place. You can also affix your photograph also in the last page of the POA and the Consulate General would affix his seal. Send the POA duly signed and attested to your father and after receipt in India, your father has to go the District Registrar, only district registrars are empowered to adjudicate the POA. Your father has to submit a written application along with notarised self declaration affidavit and the POA received. Rest of things, will be guided by the registrar officials. Note that the POA to be adjuicated within three months from the date of receipt of the same in India.
Regards,
K.GOPALAKRISHNAN
9840199577
9710925007