I dont understand how to find the options menu for Convert to Grease Pencil.
Object ‣ Convert to ‣ Grease Pencil from Curve/Mesh
Converts the selected curve or mesh object to a Grease Pencil object with strokes matching the curve/mesh; basic materials are also add. When multiple curves/meshes are selected, they are all converted into the same Grease Pencil object.
Options Keep Original Duplicates the original object before converting it.
Thickness Strokes thickness.
Threshold Angle Threshold value that determines the strokes end.
Stroke Offset Sets offset to separate strokes from filled strokes.
Only Seam Edges Convert only edges marked as seam.
Export Faces Convert faces as filled strokes.