How to disable alt + left-click which moves windows?

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1

Hi,
i really need alt+leftclick within an application.
But it turns in that symbol then and moves the whole window.
Where can i change that behaviour?
Thanks.

2

You can change it there:

https://docs.xfce.org/xfce/xfwm4/wmtweaks#accessibility

3

Hit the button.
Thank you very much!