Tan,
There has been a lot of discussion about this recently. Do a search for Markers
this post
http://archicad-talk.graphisoft.com/viewtopic.php?t=25498&highlight=markers.
To get around this, remember you can inject parameters of one window/door into the preview picture (bottom left corner of the settings box). If you have one window/door with the marker as you want it, when you are choosing your next door/window, inject the parameters of the first. Along with the marker, linetypes, pens, materials and other common parameters will be injected. Then you only have to set what is specific to that door/window.
Also, save favorites.
It would be good to be able to save marker settings by themselves as a favorite, but this is currently not possible.
Erika
Architect, Consultant
MacBook Pro Retina, 15-inch Yosemite 2.8 GHz Intel Core i7 16 GB 1600 MHz DDR3
Mac OSX 10.11.1
AC5-18
Onuma System
"Implementing Successful Building Information Modeling"