cant figure out how to open up a port for port forwarding in Pfsense for stunnel in order to set it in the airvpn client area ...getting a grey status

[courteousorbit 2]

as the title says im using stunnel ssl protocol in Pfsense, thing is id like to open up a port for port forwarding , i set one in the client area ...but it wont work status is grey 

not sure where in Stunnels package manager in services im supposed to set it or where else

help would be appreciated 

Edited ... by courteousorbit

[courteousorbit 2]

would still appreciate some help here thanks