HEric,
I think that we need to stand back here to understand what you are trying to accomplish.
If, so example the source of the data is a table of Resources (people) and you want to choose a person and also bring across some other lookup fields from that table, then you will need to set up a relationship.
Here is some help on relationships.
https://help.quickbase.com/user-assistance/cs/cs_about_relationships.htmlIf you are trying to simply manually select a name off a drop down list then you can use the method that you are using and in that case for each new record, you would be selecting a name for that multiple choice field. The field type you are selecting is indeed a multiple choice field type so that it why it behaves as a multiple choice field.