I've been testing with HDF files (tinkering with having Workbench and Blitz Basic 2, while I'm waiting for the team to add BB2 to AmiBench) and have come across something that I'm not sure if it's a bug or a feature limitation.
When adding HDF files, I can multi-select them (see screenshot), but when I click the "Select File" button it will only add the top one. I can then only "Replace Hard Disk" (see screenshot), but not add any more. So I am unable to have (for example) both Workbench and Work partitions.
I note that all the preinstalled AmiBench apps have more than one partition, so am not sure why we cannot setup our own things in the same way?