GUI Create global network

Button	Action
Name	The name of the global network
Description	This will display beneath the network name in the list
Routing mode	Select Regional or Global.
Automatic subnet creation	Select to automatically create subnets in all regions of Google Cloud Platform. This option is recommended for test environments only. To onboard the subnet for a region synchronize the global network and select the region. The subnets will have an address in CIDR notation of 10.172.0.0/20