Creates one or more tabbed dynamic sidebars for your sidebar
At the moment there is no interface for that.
There is a workaround however.
I't ain't elegent, but it works.
CSS is tricky to write for all situations so it is possible that it is being overidden by other, more specific settings. If possible do not include the sidebar in multiple nested lists, that can cause problems. To diagnose the problems try moving the sidebar so it is not inside any element except a div tag. If that works the problem is that the CSS where you want to place the sidebar is overriding the default.