Erkan Sonmez

the default settings doesnt work on my one as well. Affinity MacOs

1 ) Draw your curves. 2) Give the Curve a fill 3) - make opacity 0 %, 4) Cmd-Click (Mac) on the Curve thumbnail in the Layers panel. This will create a selection from the pixels in the curve, while leaving the curve intact. 5) - Give a name to your Curves. That way you can keep your curves like photoshop paths.

Me too.