Hey Ka,
Thanks for getting in touch and for checking out The Events Calendar PRO!
1) to have repeating events (e.g. every tuesday from Sept. 2015 to february 2016)
2) to have single events (e.g. one time – next thursday)
Yes! The Events Calendar PRO does indeed have the ability to publish recurring events and single events in the future. The recurring events can occur one time, or as many times as you would like. You can even create custom patterns for how those events recur.
3) that the plugin is noticing if one special room is occupied in case that the admin create a new event in this special room (like: “alarm, this room is already booked”) – or do you have a add-on for that?
I’m sorry, but I’m afraid that neither The Events Calendar or any of its add-ons will do this. We do have add-ons that allow you to sell tickets for events, but there is no “alarm” to create a new event for booked events like that, I’m afraid.
Does this help answer your questions? Please let me know. 🙂
Cheers!
Geoff