Only user users who have Edit permission Edit can inputted input the values.
In On the Issue Screen, Jira have has two mode modes ( Issue Create, Issue View).
In 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 mode, the user users who have View/ Edit permission view or edit will see the value of the custom field.
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Click on this custom field to go to Edit mode.
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if
user If the users don’t have such permission:
Field Security Text ( Single - Line) get 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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