If nothing was unclear or difficult, say so. Skip questions about steps you did not experience; use not applicable where appropriate.

Which access step was unclear?
What resource label was difficult to interpret?
What guidance would help?

Author notes / illustrative keys where applicable:
1. Use this answer to locate the part of the experience that needs explanation. The example issue to investigate is: members cannot distinguish public and member-only resources.
2. A difficult resource label prevents members from recognizing material suited to their task. Test a concrete description of purpose and audience instead of increasing the library's volume.
3. Turn the requested improvement into a testable next step. One illustrative action is: label access requirements before links.