How to add markers to curve without moving it

[NatalieVT]

When adding markers to curve it slightly moves. I tried different key combinations ( ALT, SHIFT, CTRL on Windows PC) but it didn't work. I want to add markers and have the curve remain still. I've got 21.2 Ps version. 

Please help.

[c.pfaffenbichler]

Are you talking about the Adjustment Curves or curves in a Path? 

Could you please post screenshots with the pertinent Panels (Toolbar, Layers, Options Bar, Paths, …) visible? 

[NatalieVT]

Oh, I suppose it's Adjustment Curves. Here's the screenshot.

[c.pfaffenbichler]

With »Auto-Select Targeted Adjustment Tool« checked one can click in the Canvas to create points on the Curve (or click/drag to move them right away).