Actually if you tap on the temperature text it’ll allow you to manually enter a number directly.
Also for the Honeywell T6/T5 and other z-wave thermostats you can check out this enhanced z-wave thermostat device handler to enable the Auto mode on Honeywell thermostats. By default you can only select Heat and Cool modes separately, this DTH will also enable the Auto mode (apart from allowing you access to other features like locking the screen controls remotely etc)