Well, that is a good point.
I guess several people sharing the same computer should have their own User Accounts and log in with their own user accounts.
I would suppose that two different people using the same computer but logging into the computer using different User Accounts will have to provide their own separate IDs when first uploading to the Portal.
However, I haven't tried.
If this is not how it works then that may raise some issues.
Loving Archicad since 1995 - Find Archicad Tips at x.com/laszlonagy
AMD Ryzen9 5900X CPU, 64 GB RAM 3600 MHz, Nvidia GTX 1060 6GB, 500 GB NVMe SSD
2x28" (2560x1440), Windows 10 PRO ENG, Ac20-Ac27