The Cloud UI has changed since this question/answer were originally written. This isn't always the case - we're talking about maybe trying to identify some of these posts on Community so it's easier for people reading answers to know if it applies to them.
You're definitely on Cloud, which is a bit different than Server now. To see if you have admin in Jira Cloud, you're going to look for the Jira Settings option after clicking on the Jira icon:
If there's no Jira settings option, there's no Jira Administrator permission.
There are 2 notions of adding a new user to JIRA.
Statuspage customers logged more than 194 years of collective incidents in 2018. That’s a whopping 87% increase from the 104 years logged in 2017 , and we aren’t even through December yet....
Connect with like-minded Atlassian users at free events near you!Find a group
Connect with like-minded Atlassian users at free events near you!
Unfortunately there are no AUG chapters near you at the moment.Start an AUG
You're one step closer to meeting fellow Atlassian users at your local meet up. Learn more about AUGs