On Land

Environment Information
At Rill Architects we run ArchiCAD on macOS. If you work at Rill, this is your stuff. If you don't, but you work in ArchiCAD, you may find something interesting. Anybody else, I don't know.
RSS

I assume you have a CD burner.

Get a blank CD from the left most happy space cabinet. Put it in the CD drive.

The CD will appear on the desktop with an icon that sez CD-R. You will be prompted to name the CD.

Double-click the CD to open its window. Drag your stuff to the CD, just like moving it to any other location. You'll get a copy box.

Once its copied, drag the CD-R icon to the trash. The Trash icon will change to a Burn icon.

You'll get a dialog that asks burn or cancel or something. Click burn.

After a few minutes the burn will finish and the CD-R icon will change to a regular CD icon. Drag this to the trash to eject it. You can also test the disk by opening it.

Label the disc. Always use a sharpie or other reliably-permanent marker to write on CDs.