Open Admin > Settings > Settings > Integration. The custom-code fields target different layouts:
- Front Head Code is inserted in the head of visitor-facing frontend and short-link layouts.
- Auth Head Code is inserted in authentication pages such as sign in, registration, and password recovery.
- Member Head Code is inserted in signed-in member-area pages.
- Admin Head Code is inserted in administration pages.
- Footer Code is inserted near the end of supported frontend layouts.
- After Body Tag Code is inserted immediately after the opening body tag in frontend, authentication, member, and short-link layouts.
These fields show code that the administrator adds. Use only trusted analytics, advertising, or verification code. Back up the old value and change one field at a time. Then test every affected page right away. Wrong or harmful code can break the site, expose visitor data, or block access to the administration panel.