There are two possibilities to use a chat on your friendica site
After activating the plugin, you can find the chat at yoursite.com/irc. Note: you can use this chat without any login at your site so that everyone could use it.
If you follow the link, you will see the login page of the IR chat. Now choose a nickname and a chatroom. You can choose every name for the room, even something like #superchatwhosenameisonlyknownbyme. At last, solve the captchas and click the connect button.
The following window shows some text while connecting. This text isn't importend for you, just wait for the next window. The first line shows your name and your current IP address. The right part of the window shows all user. The lower part of the window contains an input field.
The Jappix Mini Plugin creates a chatbox for jabber- and XMPP-contacts. You should already have a jabber/XMPP-account before setting up the plugin. You can find more information at http://www.jabber.org/
You can use several server to create an account:
At first you have to get the current version (via github):
cd /var/www/virtual/YOURSPACE/html/addon; git pull
or as a normal download via: https://github.com/friendica/friendica-addons/blob/master/jappixmini.tgz (click at „view raw“).
Just unpack the file and rename the directory to „jappixmini“. Next, upload this directory and the .tgz-file into your addon directory of your friendica installation.
Now you can activate the plugin at the admin pages. Now you can find an entry of jappix at the plugin sidebar (where you can also find twitter, statusnet and other ones). The following page shows the settings of this plugin.
Now you can activate the BOSH proxy. Next, go to the setting page of your account.
Go to the account settings and choose the plugin page. Scroll down until you find the Jappix Mini addon settings
At first you have to activate the addon.
Now add your Jabber/XMPP name, the domain/server (without "http"; just "jappix.com"). For „Jabber BOSH Host“ you could use "https://bind.jappix.com/". You can find further information in the „Configuration Help“-section below this fields. At last you have enter your password (there are some more optional options, you can choose). Finish these steps with "send" to save the entries. Now, you should find the chatbox at the lower right corner of your browser window.
If you want to add contacts manually, you can click "add contact".