Want Bigger Spaces Between Icons in Menu

I have some menus that consist of icons only. I cannot get them to spread out. They are always bunched together. How can I get more space between them, both horizontally and vertically?

See the attached screenshot. I've marked the options you have to increase.

But that setting applies to all menus in the toolbar. I want to apply different spacing to one menu.

I'll add these options into Customize Menu in the next version.

Thanks. You are the best.

Just published the version 6.6.5 beta. The additional margins are added into the Customize Menu.