You may obtain mutation record (fard) from local Patwaari and check if names of legal heirs have been entered. If yes your lawyer may opine that the gift deed may be acceptable.
Ideally all legal heirs should sign the partition deed.
If the passage in front, back and garden can not be divided it may remain common.
You can and you should pray for separate and independent exit entrance to the house in the suit or the entrance and exit has to be common.
If making front separate exit entrance shall damage the structure then it has to remain common.
The alterations in the map/structure are either approved by MC or Development authority etc…………….under whose jurisdiction the property falls. If approval is required it should be obtained.
Certified copies of all docs that are produced in court but are not provided to you can be obtained from court.
Don’t sign a negotiated partition deed if anything in it is not acceptable to you or is to your disadvantage or is detrimental to your interest.
Once the partition deed is accepted and registered it shall become in force you may be at disadvantage. Therefore do your home work properly.
If floor wise registry is permissible at your location you can apply for it along with map.
If it is not then the registered partition deed with map shall be with you.
You can obtain both or either of …………………..legal heir certificate from Sub Registrar, and succession certificate from jurisdictional court (Civil/session/HC) too……………………………………as suitable to you. Or as required for your purpose.
If the settlement arrived during meeting is not beneficial then let the court partition the property.
Online discussion does have its own limitations, hence consult a lawyer dealing in such/revenue/civil matters in person with all record.