Detail level of window 2D symbol is set up in modelview options.
It's a good idea to have several set up for different scales / level of detail / stage of design. You can set up saved views for those scales / stages etc with scale, layercombination, modelview options, pen sets, dimension styles, etc.
Our company template has twenty odd or so of different modelview options to take a project from preliminary all the way to construction documentation (and some specials for fire safety, regulations zoning, etc), just to give you an idea.
Erwin Edel, Project Lead, Leloup Architecten
www.leloup.nlArchiCAD 9-26NED FULL
Windows 10 Pro
Adobe Design Premium CS5