How to Pan the viewport camera in Perspective mode especially in 2D style game developing?

Development Asset Creation
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Hi dude, sorry for the junior level question. I’ve searched a lot but still not able to find a solution.

I’m planning to develop a 2D game. WHAT I WANT is, as the title says, a control which pans the viewport camera in Perspective mode, not rotate.

I’ve read the official document, it only says how to pan in Orthographic viewports, not Perspective mode.

I think it’ll much more efficiency if there is a way which can easily pan viewport in Perspective mode.

Pls help me, thank U.