No reset or delete feature?

I love how this app remains as a little icon on the top panel of the desktop, however I can’t seem to figure out how to reset timers or delete timers that have already served their purpose. Since I can’t create more than three, the reset/delete feature is imperative for this to be a functional app. Perhaps I’m missing something, and the developers can explain.

bemindfulandhappy about Work Time Monitor - Daily Activity Tracker