The `populate_network()` function in WordPress is used to set up the network settings for a Multisite installation, including the domain, email, site name, and more
Identifies the network and site of a requested domain and path and populates the corresponding network and site global objects as part of the multisite bootstrap process.
The `network_step2()` function in WordPress displays step 2 of the Network installation process, which can be customized using parameters such as an optional error object or various conditions