How do I patch multiple signals into one input?

Welcome to the forum…

You can’t, inputs only except 1 connection. Outputs can have many cables, from the output. You could sum LFO and an ADSR but it will add the values together.

note: that when the lfo has a value of 5v. It adds the max values of both, you could counter this with offsets like the befaco dual atenuverter

There may be something in the beginners guide here, worth a look through anyway…