Select print width on more than one layer

How do I change the print width on more than one layer at a time? At present I am having to select them individually. For example I want to select all of the layers in Make2D and change their print width or change the Linetype of all the layers in hidden lines.

In the layer panel, just select all the layers you want with the Shift key held down (for a continuous range of layers) or the Ctrl key (for individual isolated layers) - then click in the linetype column and change it to what you want.


Thanks Mitch!