[Feature request] Allow to customize the pre-defined buttons on the Timer tab.
In the "Timer" tab, there are some buttons with fixed duration (such as "1 m", "2 m"...).
It would be interesting to allow the user to customize these buttons. Example: Change the value "15 m" to "20 m".
A suggestion is allowing to change this value when right-clicking over the button (or then add a separated menu to configure this).