Icarus v1.5 supports categories for the wavetables. Every category is represented by a subdirectory within Icarus_wavetables.
PC:
To create an own category create a directory .../Vstplugins/Icarus_wavetables/MyWavetables
Mac:
To create an on category create a directory Library/Audio/Plug-Ins/Icarus_wavetables/MyWavetables
Then place your wav files within the new directory and restart the synth/host.
