Adding folders to toolbars

Hi everyone,

This is driving me crazy. I saw the following really useful feature for Dopus 9:

nudel.dopus.com/opus9/page5.html#miscellaneous

but I can't find how to actually do it anywhere! I've done just about every Google search you can imagine, but it seems to be the only place that mentions it. I'm using Dopus 10 so maybe it's a feature that's been removed, but I would really find it useful to be able to click on a "favourite" location and quickly select a sublocation to go to.

Does anyone know how to add menu buttons like this?

Many thanks in advance,

Adam

There's an example here: Start Menu button

Thanks Leo, that's fantastic!