The BSP's gate actually goes somewhere else altogether in a basic patch: an envelope generator.
Gates are basically a "squared envelope". Zero rise and fall rates, though. So what the EG does is to translate that gate pulse into something more like an instrument's physical envelope. So the proper patch would really look more like
(Ok, yeah...it's not patched. MG's patching system seems to have a Firefox issue...? Anyway...)
I used Doepfer stuff here because it's easy to follow, but the same rules apply to any similar combination of modules of this sort.
In order to patch this up to a BeatStep Pro, you would...
1) Connect a BSP CV OUT (whichever channel you prefer) to the CV IN on the VCO.
2) Connect the VCO audio output (or two in this case, since the VCA has a dual input) to the first VCA's audio input(s).
3) Connect the VCA audio OUT to the VCF audio input.
4) Connect the VCF audio OUT to the second VCA's audio input.
5) Connect the second VCA's audio output to a mixer channel for combining with other audio signals for eventual output.
So, that's the audio path. Now, for the modulators, you can see an LFO and two ADSR envelope generators. So...
6) Connect an LFO output to a modulation input on the VCO and use this sparingly for a bit of audio vibrato. You can also add a vibrato to the VCF as well, potentially with a different LFO waveform.
7) Connect the BSP's GATE OUT on the chosen channel to BOTH of the gate inputs on the envelope generators. This now has both ADSRs responding to the same gate signal.
8) Select a decent envelope for your purposes, and then send that to BOTH VCAs.
9) Lastly, use the other ADSR with a shorter and different envelope to modulate the VCF's cutoff frequency.
Basic bass, that. But that's how the BSP's CV sequencers should be patched for basics.