This project is intended as an extra application, built on top of your current Zabbix set-up.
It connects to your Zabbix API URL, using your Zabbix credentials. Afterwards, all settings are pulled from your Zabbix. This means any change you make in your Zabbix, will be transported to the Mobile ZBX application.
If you're worried about security implications, please read more on the FAQ at http://www.mozbx.net.
For more install guides (on your phone, or on your own servers), please see http://www.mozbx.net/install.html.
There's a file called "config-core.php" included. Copy that to "config.php" and modify it as you see fit. That file is unique to you, and won't change with future updates.
If you have a working webserver with PHP support, it's as easy as cloning the repository and browsing to the URL. By default, no special configs are needed. You can edit the config.php (a copy of config-core.php) to substitute some variables that suite your own environment.