I am trying to understand how many users I need. I have internal developers and managers but I also have external customers that need to enter issues and also participate in Project Plans. So far JIRA looks good but not having anyone to speak to or help is quickly taking off the radar.
A user is anyone who logs in so that they can view, create and edit issues. At a glance, all your people in the question need to be "users".
There are types of users which could affect your numbering though:
JIRA Software users cost a bit more than Core users. Agents cost a LOT more than other users. Customers are free - you don't need a licence for them.
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