My ArcGIS developer entitlements include ArcGIS Server and Portal for ArcGIS. We would like to evaluate Insights for ArcGIS. I've found documentation that says I can import Insights authorization via the Portal administrator. However I cannot find how to get those entitlements from my.esri.com.
I can't seem to find anything that say's "This is how you buy Insights" or "This is how you create a developer's instance of Insights"
I've to 3 L1 and 2 L2 NUs available to me.
Every time I try to launch Insights in the browser I am informed that I do not have permissions to access Insights - even though I am an administrator.
When I attempt to share the Insights app with a group, it gives me the impression it was successful sharing the item, yet when I try to share it again, all the share checkboxes have become unchecked.
Re: Insights, it it important that we try before we buy... 
Any insight (ark ark) would be greatly appreciated