Spreadsheet usage for multiple users - userID - wordpress pl

Great tool! Keep up the great work.

I have successfully added the Spreadsheet tool to my wordpress Blog post page. My intent would be to collect data from multiple users, using the sheet as the means.

I know from the documentation that different sheets can be created by using the field and from looking at the wp_dhx_sheet table I know about the field.

I was under the assumption that, if user ABC adds to the sheet with id=7, the userid of such user (using the wordpress userid) is automatically added BUT that is not the case.

So here my question:

how can one create a spreadsheet, put it on a wp blog post and collect answers from multiple users. Without users seeing each others input or having the ability to override?

A quick answer is much appreciated.
Dirk