I think there may be two possibilities for your goal. 1) I believe what you are looking for is DefaultActivator, under the Activators in the CK. Pull that in and place around your item, and put in a script on Activate. 2) The easier way to potentially do this is to find the item you want to be the weapons workbench, like I used an institute panel, copy the nif information/path from it, Create a copy of the weapons work bench, and then just paste the path of the nif into the copy and it should change to whatever you copied it from.