EchoMac is designed as a single user, single connect application. It is meant as a means to allow you to connect to any other station or conference server on the Echolink system. It can only connect to one station at a time, but if you connect to a conference server you can talk to as many stations as that conference server supports - just make sure every connects to that same conference server and you can have a group chat.
The first time you use the Echolink network, you need to be verified. This is accomplished by simply putting in your information (call, name, location, password) in the program preferences and connecting to the network. This will queue you up for approval, and then you just wait. Sometimes it takes fifteen minutes, sometimes it may take up to a day or longer, but that's unusual. However, eventually you should be able to log in successfully. When you run it the first time and put in your information, you can either leave the software running while awaiting validation and eventually you will see the list of active stations appear, or you can quit and come back later to check if you are validated.
I have been requested by Johnathan Taylor, K1RFD, the author of Echolink, to have you visit his Web site:
Please register your call and e-mail address with him, even though you are not downloading the software from there.