HaloMods "Classic" Read-only Archive

Hello. I was looking for a way to get scenery onto maps that arent already there. What I mean is I was looking for a way to, lets say, import barricades into Sidewinder. It doesn't already have barricades placed in it so I cant duplicate them or move them. Is there any way to get them in there?
Thanks for any help, Craig

I think PMI is your best bet. Check the tutorials section.