To use Copy From start a new project and look for the Copy From drop down box from here you can select what project you want to copy the settings from.
The Copy From feature will copy all the settings precisely from an existing project - even if you're auditing a different website - so it is worth double checking the setup is correct before actually starting the audit, as some settings don't carry across well (e.g. sitemaps).
You can only use the copy project settings feature on new projects you cant copy settings across to existing projects