A. As you said, A,B.C and D will get equal right over the property and their respective family members could claim thier respective share in the A, B,C and D Property. There is no doubt about your property partition equally under the law.
B. In your case, no unlawful interruption permissible before the court of law. However, if any family belongs A,B, C or D could raise objection to take particular portion due to description of the property is not similar or any problem with marketable value i.e Furniture issue, Super builtup area issue, Balcony issue, floor issue especialy 4th floor or 3rd floor. Under the said circumstances, the proceedings may have delay and court may give an option to settle out of court settlment or compromise for amicable settlment.
C. Sometimes, any party may file an Interlocutary Applicatons to pass temporary injuction for non alienation of the property under the lease, Rent, Mortgage, Gift, Sale, Exchange etc., In suc being, if the fact and circumstances was critical that hearing will keep on going over the IA.
D. Therefore, all the respective parties settle the matter amicably and file a compromise petition before the Court to end the drag and get expeditious remedy from the Court.