plugin a wifi device
load the hot spot
either it will have the settings from last time so click the spot
or set your SSID and Key Phrase and click the spot
if it's the first time then you will need to allow sharing on your network device:
Open the Network and Sharing Centre
click your Internet Public Network
then click the Properties button
and on the Sharing Tab
select 'Allow other network user to connect through this internet connection'
then click the new hosted wifi network.