I am using Pinboard 1.1.4 and have chosen the layout “Content/Sidebar”, which has the larger content area on the left and the smaller column on the right. I chose 2 columns…
Why is there still a lot of room (enough for another column) on the right?
I believe you are adding widgets to either the left or right sidebar. Try adding widgets to the Top or Bottom sidebar and they will occupy the full width.