When opening the GPO for editing, there will be many options available for configuration. To find the Wireless settings, expand the computer configuration node, then expand Windows Settings and from there, Security Settings.
Listed under Security Settings you will see Wireless Network (IEEE 802.11) Policies. Click on this node to display any existing configuration items.
Creating a new Wireless Network Policy
Right-click in the details pane on the right of the console with the Wireless Network Policies node highlighted and select Create Wireless Network Policy
This will open the Wireless Network Policy Wizard. Click Next to bypass the welcome screen. On the next screen, enter a name for the Wireless Network Policy and a description
Using a description can help you in the event that modifications are needed later. Clicking Next in the dialog box will complete the wizard and display the Completing the Wireless Network Policy Wizard dialog box. Leave the Edit properties box checked so that you can move right into creating the settings for the policy
reference:https://www.techrepublic.com/blog/data-center/configuring-wireless-settings-via-group-policy/
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Best wishes
Vicky