In plain language
Help options (contact, chat, FAQ) must appear in the same relative place on every page where they exist.
Who it affects
People with cognitive disabilities and anyone who needs help quickly during a task.
How to check
Check each page in the flow: help/contact/chat appears in the same relative order/position throughout. Worked example — A video-conferencing app's meeting controls: compare help/FAQ link order in the footer across different pages: shuffled order fails.
Common misconception
Teams often treat the help link as decorative and move it around during redesigns without realizing its *position* across pages is itself a requirement, not just its presence. Real example: on a professional networking site's profile editor, a "Get help with this field" link appears on the profile editor's job-title step but is missing from the identical field on the summary step, so the same repeated need for help isn't handled consistently.