how to hide few entries which user should not see in selection out of all from a list widget? Lets say there are 5 rows in data table but user should get to select out of only 3 ?

Mangesh, I think that can be done with a boolean flag for each datatable entry of yours. I'm not aware if out of the box you have the possibility to redact like that. You just will need to add a filter in your query to check for the flag