Form in Window

Hello webix Team,

I want to create fixed size window, containing form elements and I want last buttons to be static and rest of form elements with scroll.

How can I solve it?

https://snippet.webix.com/ql5qc2fl

Please reply.

Thanks.

https://snippet.webix.com/f9dg4hh7

@integral Thanks you!
But here all data is not visible in scrollview as I used flexlayout to wrap content to next line.

How can I use this scroll properly?

https://snippet.webix.com/btvnyovv

Please reply.

I am getting this issue if I resize window.