Are we talking about managers and such traveling in the jumpseat on their own airline? If that is the case, as much as it sucks, that is their right. The company owns that airplane and every seat inside of it and can decide who sits where and when. Your FOM probably has some sort of priority list for jumpseat riders and I can almost guarantee that anyone traveling on company business or anyone in management has a higher priority for the jumpseat than average line pilots commuting. The only way to fix this is to contractually negotiate it.

Now, on the other hand, if we're talking about riding on another airline, unless some special agreement has been created between the airlines, no priority should be given. ie: if Airline A has created a business plan that includes their chief pilot's employment contract stating that he may live away from headquarters based on his ability to come to work by jumpseating on Airline B. Not only should no priority be given, but this should be reported immediately. Reciprocal jumpseat agreements often include a stipulation that they can only be used for personal non-business purposes. I believe I heard that "Go!" (Mesa's Hawaii operation) was having their pilots jumpseat out to Hawaii on various mainline carriers to place them out there for TDY instead of paying to positive space them. I can't verify this, but actions such as these are completely unacceptable.