I had created an app using Import Excel SpreadSheet. I have one column named as "User" in the list. I want whenever any user add the record in the list, for "User" column it should show list of Contacts from exchange server.
Basically, when we add user in the group, we type couple of letters and SharePoint shows the name of all the users. I want the same facility for one of my column in the list.
I am using SharePoint designer 2013.
Do I need to create workflow for this?