Only user users who have Edit permission Edit can inputted input the values.
On the issue screen Issue Screen, Jira have has two mode modes ( issue create, issue viewIssue Create, Issue View).
In issue create Issue Create mode, Edit permission Edit is required. The user users can input the values in the custom field.
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In issue view Issue View mode, the user have permission view or edit will see the value of the custom field.
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if user Click on this custom field to go to Edit mode.
If the users don’t have such permission:
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Multiple Line Field Security get Text ( multiple - line) gets the value from the inputted custom field on the Issue. The application will process the value (encode to store it, decode to show it).
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