Yes, I think so. Tableau company should not have an issue with this.
Let's say it is windows computer. You are not going to ask Microsoft for a separate license if many people are using the same machine.
It's okay to have a "shared machine" in this instance where everyone is basically using the same license key. However, each user does in fact need to have their own key. So if you plan to have say 5 users who will use the machine each has to have their own license (5 licenses have been purchased). The Tableau Desktop license allows for two installations (at home, at work) so they could install Tableau Desktop and use their own key for work they do outside the office whereas in the office they're using that shared key.
Each key will work in two machines and you can utilize two machines.
try to install two machines and give it to the users.
Thank you all.