Packages act as dependencies for custom or Bunnyshell-supported applications like WordPress, Magento, Ghost, etc. They are web servers like Apache and Nginx, databases like Mysql and Mongo, programming languages like PHP, etc.
Most packages that can be installed/uninstalled with Bunnyshell and can also be customised to suit specific needs.
To achieve this do the following:
Go to your virtual machine page in the Bunnyshell interface -> OPS -> Packages
Click on Edit corresponding to your desired package -> Advanced Settings
Every package has specific settings and options that can be modified either from drop-down lists, text boxes, or collections in the All Settings Parameters section. Also, some packages have a Custom Settings Configuration option where the actual configuration file is editable in a Script Editor (note that a syntax error at this level would lead to a deployment failure).
Once all settings are established, hit Update Package.