Thank you, again, for continuing to work with me on this issue.
I have read the threads at the URLs you posted. It seems the developers involved in the threads are trying to accomplish something different than what I am trying to do. I gather that they are trying to add a custom column to the users table in the Dashboard so that they can sort on the custom column. I, on the other hand, am trying to filter the entries in the table down to those who match the criteria I submit to the search form. I am thinking that sorting on a custom column will be a poor solution once the number of users gets large, i.e. 100, 500, 1000, 1000000. I want my administrators to only have to scan through the few user records that match their search criteria.
Did I misunderstand the solutions proposed in the threads at the URLs you posted?
Lastly, I should let you know that I have posted a more general question about this issue to the WP support forum. You can find my post at the URL below. My post has not yet received any replies.
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