How to you define installation path/folder?

[NeilF]

Setting up a new machine...

How do you define where the game is installed to?

I've tried installing the Client to different places, but then it starts downloading and files aren't going into the same place?

 

[NeilF]

Used this method in the end - https://forums.frontier.co.uk/showthread.php?t=19308

Surely there should be an option where to install by now built in?