Hey AnselRoe ,
First of all, welcome to the Buttonizer Community 🥳
Thanks for your question! At this moment you cannot select an image inside the Button Wizard. However, after finishing, you're able to acheive this in the advanced editor.
If you want it for the menu button, you can click the menu-button on the left, then in the bar right, you can go to
Style and then open the
Button section. There you will find the dropdown to change the icon to an
Let me know if this helps and was what you were looking for!