How do I format User name to be Last Name, First Name

[Adam LaCoste]

I am looking for help to have Tempo generate a sortable report formatted Last Name, First Name. 

i.e., Doe, John

I would prefer not to impact the name associate with the ticket display.  If anyone has come across a plugin or solution where I can generate this report in Tempo, please let me know.  

[Mercy]

In Jira Cloud, display names are managed at the Atlassian account level and always follow the user’s Atlassian profile format, which is typically “First Last.” That display value can’t be modified or reformatted within Jira or Tempo without changing the underlying Atlassian account name, which would affect how the name appears everywhere across the site. Tempo pulls user data directly from the Jira user directory, so it inherits that format automatically.
To produce a sortable report by “Last Name, First Name,” you can export your Tempo report to CSV or Excel and split the full name field in your spreadsheet using text formulas or Power Query to reorder the values.