No, date fields all hold one single item, you'll need two of them.
As for the layout, again, no, JIRA lists them one line at a time.
Both of those could be done if you're willing to find or write an add-on to provide a dual field, and/or code to re-arrange the display
I have multiple projects that use variations of the same base workflow. The variations depend on the requirements of the project or issue type. The variations mostly come in the form of new statuses ...
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