With it you can set up customized access levels for both menus, modules, components and even component features, based on user groups or even individual users.
As a result it takes Joomla to a much higher level enabling all sorts of membership sites to be created. Especially useful is that public menus can be disabled for logged in users, allowing alot more presentation possibilities for you site.
At the moment it does not provide ACL for template access, but its a suggestion they are considering.
Controlling access to specific component feature requires a plugin to be added to MijoACL for that component. Mijosoft has a few developed already and user can get one made if they need one (for a fee). It would be good Mijosoft just went ahead and created plugins for all the popular components, rather than waiting for user requests.
All in all a fantastic addition to Joomla, that will get even better over time.
I really like the skill they've demonstrated in creating things, that make Joomla sites easy to use and navigate. Definitely a team to watch as they improve existing and bring out new interface extensions for Joomla.
Joomla Showroom is making a big effort to provide some pretty special components to the Joomla community such as this one and Registration Pro, so they really deserve our support. Their support was very responsive also. So all in all I think this component is well worth it for anyone who wants to add an attractive looking and fully featured academy to their web site.
I hope Joomla Showroom continues to develop new versions of this and their other components, as they provide Joomla users with such great functionality for their sites.
Judging from quaility of JoomLearn LMS Silver Edition and Registration Pro 2 I would say that Joomla Showroom has the potential to be up their amongst the best Joomla component providers. Definately one to watch.