By using this workflow snippet you get a quick shortcut to start a pomodoro cycle in your sidebar and at the top of your list. Disable whichever you don't need in the settings of the respective strategies.
This workflow snippet uses the following strategy:
Once activated, you'll see a new item in your sidebar called "Start 2h Pomodoro Cycle" as well as the square above the "Today" list.
After you click either of these a 25-minute timer will start and on the lower-right you'll be able to see it.
If you wish to remove one of these, you can do that by going to the Strategies and editing either "Sidebar" or "Custom Squares".