They're in the Battle Interface.

If you know where the script is located, you can paste this file in that folder.
https://drive.google.com/file/d/1BAMApjFYzK0IP5BfO3xPslLnZf5DMpF9/view?usp=sharing
If not, on the top options, there should be one that says "Modding," if you click that there will be an option for "Scripting", Once in there, scroll until you find the tab also called "Scripting" and paste the contents of the file in there. You can open the file using Chrome or Notepad to copy the text. How I set up the keys is this way. I also made another mat that my friends use, which you can look at (i think) by using scripting 9.
1 = Place First Card
2 = Place Second Card
3 = Draw Player Modifier
4 = Draw Monster Modifier
5 = Start Round
6 = End Round
7 = Long Rest