FYI. I do not know if this is common knowledge or not but there is a way to accomplish press and hold on the MX850 even though it is not an option in the software. Since the User Guide is not available to me either, I cannot tell if it is in there already. If you put a delay in first on a macro, then it creates a press and hold capability. For example, you can tap the button once and it will go to that device without transmitting the macro. If you press and hold the button, then the macro is triggered and transmitted. I thought that was pretty cool.