Sorry for the late reply.
We have some clarifications with your requirement.
1. Query : “URL will change by location of controller action”
In above query if we bind the different table for the Master-Detail Grid, then you need to use same CRUD controller action for both Master and Detail Grid. If we misunderstood your query, please provide the graphical representation of your requirement.
2. Query : “Ceate a new object to pass configuration values in the my view/partial view & controllers to setup the Views for each master Details grid..”
We cannot understand the above requirement clearly. So, please provide graphical representation for this.
3. Query : “Delete operation”
In this if we delete the record in Master Grid you need to open the dialog box with Yes or No option. If we select yes you need to show the dropdown with the values of an primary key values(Master Grid). If we select the value from the dropdown then you need to move all the records of detail Grid to the selected Master record.
Prasanna Kumar N.S.V