Yes, you can have multiple ANY-maze licence dongles, which simply means you can share multiple licences between a group of computers.
For example, imagine you have four rooms in your lab in which you will perform experiments. You set up one computer in each lab and install ANY-maze on all of them. You could then acquire two ANY-maze licence dongles and you’d be able to run tests in any two rooms at the same time (remember, to run tests a computer would need to have the dongle plugged in).
Provided you’d never want to run tests in more than two rooms at the same time, this would be a great way to share your licences.
There’s more information about dongles here.
Note: ANY-maze does not require a dongle; you only need one if you want to share a licence between multiple computers in the same lab