Enable GZIP

Hi there,
I’m setting up a site for a client trying to get it as fast as possible so moved it up to gold package and using a range of caching + scripting methods but still not where I need it to be. I’m trying to enable gzip but it seems to be something I need to do at server level as your hosting is nginx. Is there an easy way to enable this? I can’ t see anything in the settings,
Many thanks,

Abi