大多数（所有）托管公司都有一组已安装的应用程序/工具/功能与您的订阅...

你不能添加或删除，但配置（启用/禁用）他们...

如果你需要一个特定的功能，你应该serac /在托管公司要求......

Most (all) hosting companies has a set of installed applications/tools/features you get with your subscription...
You can not add or remove but configure (enable/disable too) them...
If you need a specific feature you should serac/ask for at the hosting company...