This is like a Group Charter contracting a date, destination and price . You can Contract an Exclusive or an Open Seminar. This option is like chartering the whole plane. The airline does this because there is a good chance of selling the spare seats, so notice should be good. This is an In House Seminar for us, even though you may decide not to actually hold it at your premises.
Variations are possible, flexibility is the key.
Seminars can be condensed, lengthened and special learning projects included to match your needs. Sales and management topics and briefings can be included and even interdisciplinary modules included to optimise valuable staff time.