Sorry for my english, but I need help 🙂

I have a very large db of posts, and its growning every day for 70-80 posts.. For properly using slider I would like to list in ordering to post slides a new option in advps_plistorder_by:

some option like: <option value=”date”
but <option value=”selected”

I need to list option with selected posts for slider to choose some of theme to delete from sliding..

Thank you for answer