You are correct that you are not set up for multi-user access and that you should follow the instructions in the admin guide. However, it is not that difficult to do, you need to decide on which machine will be your host machine and install the RSCM software on it. Make sure the machine with the RSCM software is not one that gets regularly switched off, preferably a main server.
Then in the project setting simply tick the box for 'Enable concurrent design' in Setup - Settings - Project. In the server field type the name of the server and you are ready to go. One further option to consider is the 'Enable edit mode for opened sheets' If you switch this off then each sheet you open will be read-only, then you click the button in the sheet banner to enable editing. This prevents users locking sheets if they are just browsing the design.
Thank you for your reply. I appreciate.