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Administrators can revoke the global permissions from users to prevent specific users from accesssing accessing certain features of the app.
Permissions
JQL Search Extensions Extended Search screen - page: Grants access to the Extended search screenSearch page.
Legacy permissions
The following permissions are only relevant to Jira instances that are still using the Legacy functionality
The legacy features are not available in new JQL Search Extensions installations.
JQL Search Extensions Subqueries creation - grants access to the subqueries screenpage.
JQL Search Extensions Worklog Search - grants access to work log the worklog search page.
JQL Search Extensions Related issues settings - grants access to the related issues configuration screenpage.