Hi Pin,

Firstly, I would like to sincerely apologize for the delayed response as we have been experiencing an unusually high number of tickets. I am sorry that it has taken longer than usual to respond to your concern and your patience is highly appreciated.

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1. Sorry to disappoint you, but at the moment there is no built-in solution to have one Column filter affect two or more Tables.

Each Table has only its own set of filters which can be used only on that one Table.

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The only way how you can have a filter affect multiple Tables on same page is if they have same Column Names for filtering;

Then you can pass a filter parameter for our URL Pre-filtering feature, which you can see here.

If you wish to see a feature for one Column Filter affecting multiple Tables in the future;

Please feel free to search on our suggestions page, 

 to see if someone may be already suggested this feature. If you can't see it, feel free to add your suggestion there,  and as more people vote, the feature will move higher on the priority list.

You can certainly follow our changeLog page if you'd like ( it is also available in the plugin dashboard), where we state any changes/new features/bug fixes during updates;

and our newsletter, so you're informed about new features, bug fixes, freebies, etc.

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If you have coding skills and wish to try to make a custom solution now,

you can check out our available hooks for Developers on this documentation and see if you can find any hook that might help.

Please be advised that custom solutions with hooks are not included in our support.

You can also research resources such as Stack Overflow to see if any other user perhaps found a workaround.

( We do like to give examples for certain solutions, but for this use-case, we, unfortunately, don't have anything yet)

 2. Is it possible to filter the filtering tables with your own form plugin (json)? Is there documentation for this?
Sorry to disappoint you on this one, too, but something like that is not currently possible with any built-in functionalities, and we also do not have any custom workaround to show you.

You can make a development suggestion for the future, the same way as explained above;

and if you have coding skills, it would have to be a completely custom solution.