Don't wait for searches to complete (default) This method requires an additional user license, i.e. while the Create Lists search is running your session uses two user licenses. You can do other work in the application while the search is running, without waiting for the search to complete. If you start yet another search in Create Lists, a third license will be required, etc. Should there be no available license in your Login Group you will get an error message when you try to launch the search: "Sorry, currently there are no user licenses available to launch a search process. Would you like to save the search criteria?". If you answer "Yes" you can save the search criteria and try to start the search at a later time. If you answer "No" the search criteria are discarded.
Wait for searches to complete A progress bar displays and you cannot do other work in the application while the search is running. This method requires no additional user license.
Prompt to wait for searches to complete The system will attempt to use an additional license, so that you can do other work in the application while the search is running. If there are no additional user licenses in your Login Group available for the search, you are prompted to run the search as Wait for searches to complete.