Editing Channel Mappings
The MIDI specification supports up to 16 separate channels, numbered 1 through 16. Typically you will use channel #10 for drums. Often times channel #11 is used exclusively for percussion as well.
Within each User Setup, you can specify the MIDI channel to use for each individual trigger. For each channel, you can then specify which mapping you wish to use. Mappings determine what note names to display within the main UI and the note picker, so having the correct mapping for each channel is important.
To edit the channel mappings for a given User Setup, select User Setup > Edit Channel Mappings from the main menu. The Channel Mapping Editor will then appear. Here you can set the mapping for each available channel. There is also a control there to set the same mapping for ALL channels.
Changes made within the channel editor take place immediately after closing it, so any triggers that use a channel that was changed will be updated to reflect the new mapping values.
When saving your changes, ZenEdit will ask you how you want them applied. You have the option of only applying the changes to the selected setup, or making the changes appear globally to ALL setups. Which you choose is up to you. If you only use one set of sound sources, then it is convenient to apply the changes to all setups at once. If on the other hand you use specific setups for specific sound sources, then you want the ability to set the mappings for each individual setup.