Note 1: Before installing Youzify Make sure that you Installed & Activated Buddypress.
Note 2: Make Sure to Unzip the downloaded folder from CodeCanyon so you can find the installable version from Youzify.
1 - Go to the WordPress admin panel and then navigate to Plugins > Add New > Upload
2 - Choose the Youzify plugin zip .
3 - Wait untill the installation process ends .
4- Congratulations you are ready to bring life to your author page.