How do I change the order of authors (before publication)?

See: Adding Authors to New and Incomplete Submissions for how to get to the metadata form that lists all the authors.

Important:

• If changing authorship, please see: How to Add, Remove, or Reorder Authors During Peer Review (Before Publication)  
• If you are only changing the corresponding author, see: How to change the corresponding author

Changing the author order is done simply by clicking the "move author up" and "move author down" buttons, and then saving the author metadata.

Authors should show up in the order they are entered - if this is not the case, please file a bug report (How to report a bug?).

Related:

•  How do I edit/correct/enter article metadata before publication?