How do you manually authorize a client permanently or long term when using captive portal?  I am able to authorize the client for one session (until the device is powered off) by clicking the Authorize button next to the device in the Clients tab.  However, after the client is turned off, it no longer is authorized.  This is causing problems for customers who use devices like Chromecast.  The Chromecast is unable to authenticate via the captive portal, so they must be manually authenticated.  However, after they turn the device off, they are no longer authenticated.