Right now when an order is created on QloApps only customer receives a mail.
So if you want the admin to receive the mail on order creation then it will be a Paid Customization.
Also please inform on what instances you want the admin to receive the emails.
Please raise a ticket if you want to go for the Paid Customization. https://webkul.uvdesk.com/en/customer/create-ticket/
When you search for a room for a date range in Book Now section of QloApps at the back end under Hotel Reservation System Tab and no room is available for any room type but some rooms of same room type or different room types are available on specific dates in that date range so that you can create a booking by combining those rooms for that date range then these rooms are partially available rooms.
Let me explain the concept with the help of an example.