FIDE official announcement on rating hybrid tournaments:
https://www.fide.com/news/906
As stated in point 0.2 of the newly approved regulations, “The tournaments to be rated shall be pre-registered by the federation that will be responsible for the submission of results and rating fees. The tournament and its playing schedule must be registered one week before the tournament starts. The QC Chairman may refuse to register a tournament. He may also allow a tournament to be rated even though it has been registered less than one week before the tournament starts. All tournaments played under Hybrid conditions as described in 2.1 must be approved individually by the QC Chairman.”
The requests will be examined on a one-on-one basis, and FIDE’s Qualification Commission reserves itself the right not to rate a specific tournament. This is a precautionary measure to protect the rating system from any unforeseen circumstance, as we enter uncharted territory. In that eventuality, the organizer of the tournament has the right to appeal to the QC.
The best way to prevent this from happening is that organizers send requests with as much notice as they can, and include as much detail as possible, to the Qualification Commission: qualification@fide.com. This will ensure that there is a margin to make whatever adjustments are considered necessary so the event can be rated.