So I can use the
PeopleManager to get a user's profile but I can't figure out how to get the correct ID I need in order to add a new list item to a list and populate a look-up type field with that specific user's information.
After an item is inserted I can get that value using the
FieldUserValue but how do I determine it before?
This is using COM in C# and SharePoint 2013 Online.