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Behaviours let you extend the standard field configuration options available in Jira , and and give you the power to use contextual information like current field values, workflow step name, or user details as conditional logic.

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Behaviours give you more options to customize how fields in Jira behave, so you can show/hide additional fields when a particular option is selected. For example, you might want to use a behaviour to control what information certain users can edit or view. As a project manager, you may want full complete control over which issues go into a sprint. Using behaviours, you can make the Sprint field read-only for anyone except users in the Project Managers role, ensuring only project managers can add issues to sprints.

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