1. Purpose

Makes many 3D views track one reference plan in real time: pan the plan anywhere, the 3D views rotate along. Use it for model reviews — steer with one hand while many 3D angles follow, no per-view orbiting.

2. Quick video (≤ 2 minutes)

[Video in production — follow the steps below for now.]

3. Steps

Open 1 plan as reference plus at least 1 3D view to follow. [image 01: reference plan and 3D views open together]
Click 3DSync inside Save & sync views in the VP_MEP tab, View panel.
In the dialog, pick the reference plan and tick the 3D views to sync, then Start. [image 02: plan-plus-3D selection dialog]
Pan/zoom the reference plan — the 3D views rotate along live. The tool remembers the last selection, so next time it starts right away.
To stop: reopen the dialog and press Stop. [image 03: pressing Stop to end syncing]

4. Real-world example

A coordination meeting with 2 screens: floor 8's plan left, 2 3D angles (NE, SW) right. Start 3DSync on the plan — drag the plan to any grid, both 3D views swing there, the whole room looks at one spot.

5. Common errors

Symptom	Fix
"Khong the bat dau dong bo 3D."	Check the reference plan and 3D views are still open, then Start again
"Khong co tien trinh dong bo 3D nao dang chay." on Stop	No session is running — just carry on
Panning the plan moves no 3D view	Check the session is still on; Start again if stopped

6. See also

Save a view for syncing — capture one fixed angle instead of live tracking.
Jump to the saved view — jump views one by one to the saved angle.
Nudge the section box stepwise — slide the box while reviewing synced 3D.