Virtual Robot With Two Controllers

Running ARC on a LattePanda (Windows) with the onboard Arduino Leonardo flashed with the EZ-Genuino_Leonardo firmware and connected over USB. I checked DTR Enabled in the Connection config so the serial events fire correctly. Two micro servos for head pan/tilt are on the Leonardo (D3 and D5). I also have an external EZ-B v4 over Wi-Fi for the higher-torque arm servos (shoulder on D4, elbow on D5). Both controllers connect fine (Leonardo as EZB index 0 over USB, v4 as EZB index 1 over Wi-Fi), and I can move everything using servo controls and Auto Position frames without issues.

I added the Virtual robot skill to visualize all four joints. Here’s the snag: when I add servo markers, the selector only seems to bind to ports like D3/D4/etc without any obvious way to select the EZB index. The head markers (0.D3/0.D5) update perfectly, but the arm markers follow the Leonardo’s D4/D5 instead of the EZ-B v4’s D4/D5, or sometimes they don’t update at all if those Leonardo ports are unused. I tried renaming servos via the servo config/manager to HeadPan, HeadTilt, ArmShoulder, ArmElbow and then typing those names into Virtual Robot, but the field appears to only accept a port (and flags it invalid if I type a name). I also tried adding a second Virtual Robot instance hoping it would target EZB index 1, but I don’t see a board selection anywhere in the skill.

Is there a way to explicitly bind Virtual Robot servo markers to a specific EZB index (e.g., 1.D4) or reference a named servo rather than just a raw port so I can visualize joints across multiple controllers?