Hi again!
Only the station designated as the "Fax Server" will be able to do this. In other words, the system that has the modem.
Yes, you can work in QIWIN/Adagio while the Fax Server is running, however, if you do alot of faxing, you may want to setup a separate system do be the designated Fax Server, as you may notice a slow down in the operation of your QIWIN and/or DOS Windows' due to the fax server being constantly in use.
If the system you are running the minimized Fax Queue on is NOT equipped with a modem, you will not be able to open the Fax Server. Only the system with the modem can do this.