Hi, Dev07.

Firstly, my apology for the waiting time on this reply.
We had our Orthodox Easter holiday break which increased the delay.
Thank you very much for your patience.

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Can you please elaborate in more details , when you say a custom filter what would that be;

like a completely new filter type, other than our already existing Advanced Filters from this Documentation?

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Perhaps you mean a filter, like a custom hook?

You can see our available filters/hooks here.

We still have some that are not added to the documentation, our developers are working to add all filters/hooks soon.

2. And also, i apologise for the other point i am not sure what you mean by making changes in Ajax call,

can you elaborate more about what is needed for your use-case;

and we will advise if it is possible?

Best will be if you have any kind of a working example such as screenshots or a Video.

Thank you.