Hello @odibox,
Is it possible to add a (filter / finish) button directly in the querybuilder.
Sure, it is possible to adjust the individual querybuilder line configuration object to include any additional components. Please take a look at the following example: https://snippet.webix.com/8or1n9dn.
Basically, every new level is represented by a separate querybuilderline
object, which is why it is necessary to modify its default configuration. This can be done by creating a new custom component based on the already existing querybuilderline
(essentially, you are building on top of it). You can read more about custom components and their customization in this article.