Ok. I can select NT’s to randomize, I see them blinking after selecting the randomize icon. Then what do I do to “scroll” though the random combinations.

There isn’t a way to iterate through the combinations automatically. The tool is only used to mark the bases to be “randomized” experimentally if your design is voted in. If you want to try other combinations, you’ll need to manually do those mutations yourself

No problem there. Thanks for the reply.