The buttons you are seeing there are associated with Transitions not statuses.
prerequisite - You need to be an admin
Edit the workflow in diagram mode - project settings > workflows
double-click the transition called "In Progress" and change the name there.
WARNING: if this workflow is shared you will change it for all projects that use the workflow. if that is undesirable then copy the workflow, edit it and then associate to your specific project under that same Workflow screen mentioned above.
When to use CSV importer When managing your processes in Jira, there are many occasions where you need to create a lot of tasks. Creating them one by one will cost you a lot of time and effort and i...
Connect with like-minded Atlassian users at free events near you!Find an event
Connect with like-minded Atlassian users at free events near you!
Unfortunately there are no Community Events near you at the moment.Host an event
You're one step closer to meeting fellow Atlassian users at your local event. Learn more about Community Events