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The statistic row on the issue show how many times an issue has been commented, updated or work logged on. It also shows the current status the issue is in.

Global settings

The global settings can be reached by going to System > Add-ons and goinr to the section Inbox for JIRA.

This page control the default user settings for your organisation. Changing these settings will reflect on each user that has not yet changed their own settings.

Users that changed their own settings are overriding the global settings.