A room link may allow someone to join a recording session or begin an access flow. Treat it as information for the intended participants, even if the room has other protections. A public post is rarely the right place to deliver a private interview invitation.
Send the minimum useful message
Include the interview time with a time zone, the room link and a short setup note. Ask the guest to use headphones and test the chosen microphone. Keep background documents in a separate message or folder so the actual joining instructions remain easy to find.
Check the address before sending. A copied link from an old test session may still look convincing. Open the invitation through the normal guest flow using a test session when possible, and confirm that the host and guest see the expected room.
If the tool provides expiry or participant controls, use the settings documented for that release. Do not promise that an invite is single-use or expires automatically unless the tool actually says so.
Keep links out of public material
Before sharing a screen recording or support image, inspect the address bar, chat and invitation panels. Hide or replace access links in public examples. A room name and a participant's email may also reveal more than the tutorial needs.
After a changed interview time or a cancelled session, tell the guest clearly which invitation to use. Avoid leaving several similar messages without a final confirmation. This is a practical access habit, not a claim that a particular invite system is secure under every condition. Follow the room's current instructions and keep the communication simple.