Allow profiles in the current quota to use iframes
Now that calendar.google.com is authorized as a domain which is allowed, we must let some profiles use the
iframe html tag in order to get it visible.
The location to do this is:
ACP -> CORE -> SYSTEM CORE -> QUOTA CONFIG -> ALLOWED HTML TAGS
iframe is not one of the default html tags that is allowed by users as it contains a measure of risk to allow unknown sites to display as if they were your own.
In the "Allowed HTML Tags" section for the quota your interested in it will look something like this:
span,strong,em,a,b,u,i,p,div,br,img,h1,h2,h3,h4,pre,hr,ul,ol,li,sub,sup,table,tbody,th,tr,td,div.style
We want to alter that to also include iframe, so make it:
span,strong,em,a,b,u,i,p,div,br,img,h1,h2,h3,h4,pre,hr,ul,ol,li,sub,sup,table,tbody,th,tr,td,div.style,iframe