Hi mohaunix,
firstly: I don’t want to sound unfriendly, but please don’t pressure me like this. I’m always happy to give support in the best way I can. However, I’m doing it on my own schedule, when I have the time and the mood for it. Constant bugging will not help this. Remember, you are not paying for this and getting this for free, so please don’t make demands like this. Thank you for your understanding!
Now, regarding your question:
This is possible with this Premium Extension for TablePress: https://tablepress.org/extensions/datatables-inverted-filter/
However, using that is a little bit more complicated than for other extensions. First, install and activate it like a regular WordPress plugin. Then, you’ll need to modify the PHP file of the Extension. In line 22, the array needs to be filled with the slugs of all pages that you want to use this function on. The “slug” is the last part of the URL of a page.
Regards,
Tobias