Need to configure DFR1168 Thunderbolt to PCIe for automatic Hotswapping

I'm interested in designing your DFR1168 USB4 to PCIe Docking Station into our product:

https://www.dfrobot.com/product-2835.html

 

I have a special control PCB that I want to use to initiate a 'hot swap' action on your DFR1168.

I have read the info online posted here, but it is not clear how I can perform the 'hot swap' action in a programmatic way from my control PCB:

https://wiki.dfrobot.com/Thunderbolt_4_Graphics_Card_Docking_Station_SKU_DFR1168

 

Questions:

1. I assume I put SW1 and SW2 both to position 2 for forced startup/shutdown.  Please confirm. 2. If I turn off switch J3/J4, then turn it back on, does it perform a "hot swap" operation on the host computer? 3. If so, how long do I need to have J3/J4 off before I turn it back on? 4. Is there an easy way for my external PCB to "switch" J3/J4 by tying into a special header on the board somewhere? 5. Or do I need to unsolder J3/J4 and solder in my own connection?

 

Thanks,

Neville