Jira has a small number of commonly edited advanced configuration options, which are stored in the Jira database. These options can be accessed and edited from the Advanced Settings page. 

Editing Jira's advanced settings

  1. Choose > System
  2. Choose General configuration and click Advanced Settings.
  3. Edit the value of a Key by clicking its value on the right of the page. The table below has extended information on some of the Key values.

    Key
    Key configuration
    jira.clone.prefixSpecifying no value prevents a prefix being added to the 'Summary' field of cloned issues.

    jira.date.picker.java.format
    jira.date.picker.javascript.format
    jira.date.time.picker.java.format
    jira.date.time.picker.javascript.format

    Configuring date picker formats
    jira.issue.actions.orderChanging the default order for comments from ascending to descending
    jira.table.cols.subtasksConfiguring sub-task fields displayed on parent issues
    jira.view.issue.links.sort.orderConfiguring the order of linked issues
  4. Click Update. Any changes you make to these properties/keys become effective immediately.