Hi Rami,
Welcome to our premium forums and thank you for choosing PRO! From my understanding, the “classroom day” and “on-site days” are at two different geographic locations. If this is correct, events are limited to one venue location at this time. The good news is we do have plans in an upcoming feature release to incorporate that functionality into our plugins!
If I’ve misunderstood you, please reply back with as much detail as possible and we’ll get to the bottom of it. Again, thanks for choosing PRO and have a wonderful weekend!