You do it by editing the profile itself. Mouse down on the edge for which you want to change the extruded material - and select from the pet palette to change the properties of that edge. See Help for editing Profiles.
One of the forum moderators AC 27 USA and earlier • macOS Ventura 13.6.2, MacBook Pro M2 Max 12CPU/30GPU cores, 32GB
Thanks Karl, I have been reviewing the editing profiles and i feel i am missing something, when i edit the material on the skin the entire profile changes. Under archicad Help It shows a editing Tool bar and a Custom Edge Settings Box, I am getting neither one of those items, I know it must be a setting but i cant seem to locate it, any suggestions?