Nope unlimited users, you can actually just use the Joomla ACL to control the usergroups access etc.
OK great.
Calendar owners with joomla article? Umm this is a little bit more complicated. I cannot see how it is possible, Should the article be different for every user? or is it generic? if so we could implement a custom html module on a JEvents Menu Item in a Custom JEvents Position.
Well actually as I'm starting with Joomla perhaps this is not the best way of doing it.
But yes, the calendar owner should have his own article, and only one, and in some place there should be the calendar. Perhaps in a module at the left or right, it doesn't have to be embedded in the article itself if it's difficult to implement, but it should be visible only when the registered user opens the article. Perhaps there are more professional ways of doing it, I will have to test.
You can use RSVP Pro and create a template assign a drop down in hour format and set the capacity of that field to 1 so it will be removed when used.
OK, so I will need help with this then.
Using the latest Flat layout is responsive. Although you may need some customisation with your template which we are generally happy to help with.
That would be nice, even If I know a bit of html and understands the basis of php, the amount of options of joomla and plugings, etc, is overwhelming at first !
Syncing is possible with the JEvents iCalendar Export Menu Item.
And the sync works in a way so that if the calendar owner syncs it's calendar with this one, every registered event will be notified and added to his mobile calendar as well ? Or it's a file that you export and have to load to your mobile once in a while ?
Thanks for your answers Tony