Installing a multiple site purchase on multiple sites

I have purchased a five (5) seat license. The first site install was obvious and easy as it was made on the computer where the key and install instructions were downloaded. How to go install on the remaining four (4) sites? I also purchased licenses to down load to different thumb drives. Instructions please so the down loads will work. Thanks, Charles

installation on the other four machines is the same as on the first machine. The same licence certificate file and instructions should be used on all the licenced machines.

For creating thumb drives, from one of the machines with Opus and the new licence installed, use Settings > Backup & Restore and then choose Export to USB Flash Drive from there. (You can push F1 on any page of the export wizard for more detail on the options it offers.)