When you need to use your computer as wireless hotspot, you can easily enable that functionality with PowerShell:

Windows PowerShell
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PS C:\windows\system32> netsh wlan set hostednetwork mode=allow ssid=Windows-Wireless-Hotspot key=password123
The hosted network mode has been set to allow.
The SSID of the hosted network has been successfully changed.
The user key passphrase of the hosted network has been successfully changed.

PS C:\windows\system32> netsh wlan start hostednetwork
The hosted network started.

PS C:\windows\system32>