Have optional buttons which are usually capacitive touch which perform the functions:
In history mode, the other button toggles timescale
In configuration mode use first button to go to next item, second button to change setting.
It is possible to configure from a serial console without the buttons or screen. For this use minicom, eg: minicom -D /dev/ttyUSB0 -b 38400 and type “config” to enter configuration mode.