Hi @Pankhuri_16 ,
Adding custom date columns in Project Online requires setting up the use of custom fields through the Project Web App (PWA)
Add a custom column to the Project Power App - Project for the web | Microsoft Learn
If you want to add a new date column in Power BI after importing Project Online data, you can check the following:
Create custom columns in the Power Query editor:
Query overview in Power BI Desktop - Power BI | Microsoft Learn
Add a custom column - Power Query | Microsoft Learn
Use the Dax function to create custom columns:
Tutorial: Create calculated columns in Power BI Desktop - Power BI | Microsoft Learn
Refer to:
Solved: Create a custom column with a new date based off a... - Microsoft Fabric Community
Project Online: connect to data through Power BI Desktop - Power BI | Microsoft Learn
Best Regards,
Liu Yang
If this post helps, then please consider Accept it as the solution to help the other members find it more quickly.
