Newbie: Left Mouse Button Bafflement

Hello

Today I started learning Xdesign. I'm coming from Fusion.

I'm looking at the sketch interface and if I try and select and drag an item (e.g. the end point of a blue line) using a held left mouse button I always get orbit.

Is this normal behaviour or a configuration issue?

If it's normal, can someone point me at a move tool, or something.

Not feeling too productive at the moment 🙂

Thanks