Order 1 Rule 10 of the Civil Procedure Code (CPC) in India pertains to the addition or deletion of parties in a legal proceeding. It grants the court the power to add, substitute, or remove parties from a case if it is necessary for the effective and complete adjudication of the matter.

Under Order 1 Rule 10, the court may exercise its discretion to make necessary changes to the parties involved in a case to ensure that all interested parties are properly represented. This can be done at any stage of the proceedings if it is deemed necessary for a just and fair decision.

The court may add parties to a case if their presence is necessary to adjudicate the dispute effectively or if their absence would result in an incomplete or ineffective decision. Similarly, parties can be removed or substituted if their presence is no longer required or if there is a change in their legal status.

It is important to note that the specific procedures and requirements for adding or deleting parties may vary depending on the jurisdiction and the nature of the case. It is advisable to consult with a legal professional or refer to the specific rules and provisions of the relevant jurisdiction for detailed guidance on this matter.