Duplicate layer


is there a way to duplicate a layer ?
Let’s say I have a “Geometric field” layer containing 4 lines to make holes (in the voxel field defined by previous layers).
Now let’s say I want to add 4 more identical holes but turned by 90° on Z.
My first reflex was trying to duplicate my “Geometric field” layer and then rotate it 90.
But I couldn’t find a way to duplicate a layer. Is there any ?
I ended up by creating another “Geometric field” in which I manually added my 4 lines.
Could I have done it an easier way ?



Here is a screenshot.