On Hold Times Upgrade

WE would like the option to have a more time limit to when someone is placed on hold. We are a travel agency that will have multiple things to do. If we call an airline and they put us on hold for 2-3 hours (yes, this happened in Covid) we want the ability to flip and call a client on another line, then go back to the other hold line. Right now is not ideal. The system just cuts the person on hold off.