We've answered you in the direct messages, but let me duplicate the answer for everybody else on the forum if you don't mind.
Thanks for reaching out to us, and for the kind words! Your support is much appreciated, and it's fantastic to hear that you’re finding RealtimeBoard useful.
I do understand that it's not very convenient to use two tools (RealtimeBoard and a calendar) at the same time. I'm afraid setting reminders is not available at the moment, but we have similar functionality in our backlog. When reminders become possible, we will send you a note!
If you have any questions, feel free to contact me at this email — I’m always here to help!
+ 1 on the reminders function! It would also be great to "assign" tasks to others.