How to access a client website while dns is not switched yet

Hi all
How do I access a clients website while his dns entries are not transferred yet.
I created a user account and domain in cwp and want to install also Wordpress, but I have no clue how to access this page (e.g. domain would be xyz.ch, Wordpress would be xyz.ch/wp ).

Thanks for your support

by modifying hosts file on your local computer