I'd like to share a little trick that is very useful to find a sweet spot when modulating : offsetting. For example, you have an LFO whose output is oscillating between 0 and 5 volts. It is too much for your modulation input, so you want to reduce it to a range of 1V, so you pass it through an attenuator. The output is now 0 to 1V. Great. It's enough most of the time, because often the CV input value is added to the value that you dial on the knob : for example, if you have set your filter cutoff at 12 o'clock, its value is 2.5V. If you add your LFO to that, the filter cutoff will oscillate between 2.5 and 3.5V. In other words, the knob itself acts as an offset. But other times, the knob value is bypassed (such as the PWM in the 2osc), or it turns into an attenuator. So you might need for example an LFO that directly oscillates between 2.5 and 3.5V. In Eurorack it is done by some modules like the Doepfer A-183-2, but that doesn't exist in AE. Fortunately, you can do that with the 4ATT/MIX.
The patch is very simple : patch your LFO into IN1, patch a +5V signal into IN2, and send those 2 in the mix. LEVEL 1 controls the amplitude of your LFO, and LEVEL 2 controls the amount of offset. You can then use the MIX output, and you're done.