to emerysong
The program saves all automatically in the right place, where the bot is able to find rules and use it. You don't need to do anything extra.
(Routines\DefaultRoutine\Silverfish\data\_mulligan.txt)
After a series of the latest updates, I found a bug which didn't allow use Mana-rule (on your screenshot it looks like a ton of pictures on a red background. But in fact it would be enough to set 1 in the Mana-rule field). In the near future I'll fix it.