-In Preset tab, click advance option in top left corner.
-In Generator Channel tab, click Overwrite then click Always Overwrite in the top left corner.
-Then click X in the upper right corner to exit the CURRENT RUNNING program.
-Go to Preset Tab to begin loading your next generator.
-After it is loaded and running, click X in upper right corner to exit the current running program and to program the next one.
If you want to stop and clear the current channel so you can run something new on this channel, you must click ERASE in the upper right corner.
If you do not do this, the previous settings, waveform and frequencies will keep loading when you click a pink GC box. To remedy and clear this generator channel then click ERASE. Now it is free to receive a new program.
For more details, please check the link: