I'm going to assume that where the manual says Tool Output, it means there is an output that gets switched to turn the spindle on?

If it is, then the quickest option would be to select one side of VFD speed inputs, connect it to the Tool Output, and connect the VFD CM to Eding Gnd/0V.
Probably best to power up the VFD, and test this by connecting one of the speed wires, to the CM wire, and making sure the spindle starts. The VFD will most likely need to be powered up, before you make the connection, or it won't run. (it will depend on how the VFD is configured, as to whether it will run the motor immediately on power up)

To get speed control, you'd need to wire the FWD terminal to the Tool Output, VC2 to the 0-10V output, and then join CM to GND/0V.
I'm not sure if you'll have to change any settings in the VFD to get that working, but try it and see. If it doesn't work, make sure you are getting 0-10V at the terminals, and the Tool Output is switching. If you put a multimeter set to volts over the FWD/CM terminals, it should show a voltage with the spindle turned off (I'd guess it should be around 12V, but may vary depending on the VFD. It should certainly be higher than a couple volts), then when you switch the spindle on, it should drop to near zero volts.