Hi Dave.
Lets assume: in your collection you have field "owner".
This field fills with user "_id" who created this row in collection.
When you need to get all user(with certain "_id") rows you need to make following:
1 Add to your page "query" service for collection you need. http://prntscr.com/3vu3gc/direct
2 Click "Edit mapping".
3 Navigate to "Request" tab and you will see "Where" request parameter. http://prntscr.com/3vu5hi/direct
4 You can map directly "LSV" to this field. http://prntscr.com/3vu69b/direct
5 Then click "Add JS" and fill it with following code:
pre
var where = {"owner": value};
return JSON.stringify(where);
/pre
http://prntscr.com/3vu9z1/direct
So you need fill this parameter with current user "_id" and this service will return only items with this id.
Regards.