In a joint power of attorney for sale of immoveable property, is it valid if
1 one party has not yet signed: both parties have ti sign it to have valid legal implications
2. Or one party accepts money from the attorney w/o the knowledge of others does it become binding on all:if on accepts money from attorney then it is completely binding on all.(by the way your question is attorney on behalf of all have given money right)
3. Have the persons giving the POA to sign before the notary: it is better for person giving poa to sign before notary as without that notary will not register it.
4. Is registration mandatory: yes to avoi furthe legal complication and validity of poa it is mandatory to register poa then only it becomes valid.