We overhauled the CC Waveform Generator that we introduced in v3.7. In the v3.8 firmware, we added 4 CC Waveform Generator engines. That means that at any one time, you can have up to 4 generators churning out CC messages for you in various waveforms.
On a global level, you can specify the waveform, and min/max CC value. These are the options available in the Controller Settings.
On the preset level, you can specify whether to start/stop any of these engines, set the interval (in milliseconds) which is the length of 1 cycle, the CC number, Channel and whether to run the waveform once only, or perpetually.
We just finished this up for the MC8, and will update the code for the MC6MKII and MC3 before releasing this in beta and the staging editor.