I have created users and given them individual logins with appropriate rights. Performance is good but I am going to move to a new faster server tomorrow.
It is indeed one Elve instal handling everything and so far there has not been one hiccup. The users have Ipads and access the touch screens with these and on their laptops with Touch Screen viewer. Elve also handles the automatic climate control by opening windows in certain areas and turning on heaters and coolers when necesary. It also prevents users from leaving windows open overnight and turns off heaters when necessary.
We can also track climate performance because we log everything.