SP - company filter and selection not working

in the Work with prospects search screen 1. if you are limited to one company it does not filter the company drop down and only show that company. 2. the search does not limit you. 3. This should also apply to the calendar search. 4. since you have to select a company for each salesman also need a flag to indicate they are authorized to all companies. 5. if you are authorized to all companies, the one selected on the salesman admin screen should be the default select on the work with prospects screen.