Solid State Logic 4.3 - Manual (Page 49)

Soundscape Mixpander
Page 49 of 59
With the I/O and DSP Assign tool selected, clicking an assignable mixer element such as an Input,
Output, Send or Track Insert calls up a menu where all the possible signal sources/target
destinations appropriate for that element are listed. Click your selection to modify the assignment.
For a Send element, the menu displays all the available physical outputs, buses and streams:
For a Track Insert, the streams are listed:
NOTE: Remember to switch back to Mixer Control mode to use the Mixer!