Jan Steele wrote:
I am new to synthesis and wondered if there is a way of controlling the rate of LFO1 during performance in the two ES2 patches?
Yes. Set up a modulation routing with Lfo1rate as the Target and your controller (for example ModWhl for modulation wheel) as the source.
If you don't want to use one of the standard controllers the modulation router offers as a choice, you can set the source to Ctrl A:
Then at the bottom left of the ES2, click MIDI, set Ctrl A to "- learn -" and move your controller's knob/fader: