Modulation Matrix destinations

Is there a way to assign a source to modulate the depth of another modulator? For example, if I have an LFO assigned to modulate the cutoff of a filter, is there a way to modulate the depth of that LFO? I see you can set “LFO frequency” and “LFO shape” as destinations, but I haven’t been able to figure out how to do depth. Is the list of modulation destinations in the modulation matrix the extent of destinations you can use?

I know in this case you can automate parameters in the DAW or also drawing an envelope around the LFO itself, but I am just curious.