I would like to know how to set the board so that I can see stories and its sub-tasks in the sprint log (i.e. a view of current sprint). I somehow set it to see people and their tasks, which is not what I need.
It's not clear what you mean by sprint log, or what settings you may have been altering, so:
Check the filter for the board - make sure it includes the sub-task issue types.
Check the "quick filters" to ensure they are not hiding anything
Check the swimlane definitions
Follow these steps:
Please ensure that the User Story issue type is added to your JIRA project's Issue Type scheme and the project is JIRA Agile enabled.
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