B&G Deckman - Manual (Page 119)

Chapter 7: Instruments
7.14
To change or add a variable to output, click on a line in the variables
column (a blank line for adding variables or on a variable to change),
select the variable you wish to output and then OK. The variable will
appear on that line with the chan column showing -1, which indicates
that output is turned off. Click on the -1 and then select the channel
number you wish to use (1 to 11, as in the example). If you assign more
than one variable to the same channel, then these will switch with a
frequency of around 3 seconds.
Figure 7.8