Add user picker to grid

Question

Hi, 
 
 I have a requirement to add a group picker as a column to the record type grid. Currently, we are fetching data from DS and displaying it on UI as record type grid. Additionally, I want to add a user picker to these records as an extra column, and then upon selecting and submitting, this should get saved to the DS. Can someone pls let me know how this can be achieved? 
 
 Thanks, 
 Subramaniyan J P

Ashwin · Answer

As you mention you have the data present in DB you can use expression rule to fetch the data and use the expression rule into the interface and use the above code mention by krishna