I'm a middle school teacher. I use the boards in two fashions: 1) for student collaboration, and 2) for displaying class notes, videos, distributed materials, and board writing. In my school we have a SmartBoard (aka - DumbBoard). The DumbBoard software is slow to load and wastes too much time, so the RealTimeBoard became a solution.
For student collaboration, I have and idea section and work product selection. Students can determine if the final work they upload is accessible to me or other members. They can share comments, photos, and general ideas. For classroom shared material, student can vote. I find it best to visually think of the processes and what you want the kids to create. Then create a template board. Finally, create your classes. The import of excel or google sheets lists make it incredibly easy to add student names to the boards.
For my class notes, I typically create a line across the middle of the board. Below the line is the homework section, above the line is the classwork. I create a boxes with the daily objective (Students will... in order to...) and upload the materials (view only via google docs). I can insert youtube videos and other documents (even pdfs, Microsoft docs, pictures, web pictures and websites, and charts). I create a frame around each of the lessons so that when students are absent they may view the materials. When they come in and tell me they didn't go to the site, I hand them a computer so they can visit the site. Students who are absent, getting tutored outside of class, or parents wanting to see what it is we are doing can easily access the public board, which does NOT contain any student information.