A license is either for a single computer or a single person.
If it's for a single computer, anyone can use it, but it can only be used on that machine.
If it's for a single person, you can use it on any computer, but only that person can use it.
If there are two of you and you have two computers, either way you'll need two licenses! I'd recommend going for individual licenses since they tend to be more convenient than limiting it to a single computer. You can get individual business licenses, just make sure it's your personal name on the license and not the organisation name.