How to edit category in block

Hello mkljrd,

You make reference to Ajax filter. This is an option from Blocks Settings within Visual Composer. You can choose what category to display in your block if you are using the Category ID, like this: http://screencast.com/t/A2W2huNJHjQu – http://screencast.com/t/UrgY4WgN .
Here http://screencast.com/t/3GY8aQ7L4 , you can see how to find the Category ID.

Hope this helps and let us know how it goes!

If is not what you mean, please provide more details about this.

Thank you for message!