Send to hotel makes the rooming list and group details a hotel needs, in ATOM, and hands them to your own email. Open it from the Hotel tab: in a hotel's rooming list, tap Send to hotel (people who can edit travel; everyone else still has the Front Desk PDF there). It has its own screen with four parts.
WHO IS STAYING: the hotel's rooming list. Add from the tour lists everyone on the tour who isn't on it yet, all ticked: untick anyone staying elsewhere (the driver, say) and tap Add. Roommates, own dates and room types are set in the Hotel Console (the link under the list). You can also send the group details first, with no names, and the names later.
GROUP DETAILS: what a hotel's group sales desk asks for before it writes a group contract: group name, company, company address and phone, Single or Double occupancy, Room and tax and Incidentals billed to a Master account or Guests pay their own, a payment note (for example card on file in the TM's name; never type a card number), the contract signer, the on-site contact, and requests (keys ready at check-in, early check-in). They save on the hotel. A hotel with no details of its own starts from the tour's last request (it says which hotel), so the next one is mostly done; group name, requests and who to send to start fresh.
THE EMAIL: written from all of that: arrival and departure with nights, rooms per night (from the rooming list, roommates count as one room; listed night by night when it changes), occupancy, billing, signer, on-site contact, then the rooming list one line per room (roommates as "Name & Name (one room)", anyone with their own dates shows them) and your requests. To offers the hotel contacts that have an email (add the sales rep under Hotel contacts in the Hotel Console). Edit the text freely; Undo my edits puts it back. ATOM never sends it. Open in Email opens your own mail app with it filled in, and you press Send. Copy copies subject and text. PDF is the Front Desk PDF with a Group details section: it downloads on a computer and opens the share sheet on a phone (Mail, Messages, Files).
HOTEL RIDER FOR THIS PROPERTY: each hotel keeps its own artist hotel rider (a Tokyo hotel's rider is not a Des Moines hotel's). Upload this hotel's rider saves the file to that hotel only; Replace file swaps it, Remove rider takes it off. The hotel opens it from its own permanent link (atominterstate.app/hotel-rider/...) with no login; replacing the file keeps that hotel's link, removing the rider or deleting the hotel ends it. Put the rider link in this email (on by default) adds the link to the email and the PDF. Next time the tour books the same property (same Google place, or same name and city), Use the rider from your stay here on (date) puts that rider on the new stay in one tap; a different hotel in the same city never gets it.
WHEN THE HOTEL SENDS THEIR LIST BACK: tap Import the hotel's rooming list. It opens the Hotel Console's importer: drop their PDF, Word, Excel or pasted text, and ATOM matches their names to yours and keeps their confirmation numbers and room types (see the Hotel tab topic for how importing works).
WHO CAN USE IT: people who can edit travel on the tour (the TM and those they let manage travel), and the tour's travel agent, who opens it with Send to hotel in the Hotel Console (they have no Hotel tab). Others are told to ask their TM.