Schedule Blocks Or Client Time Display
Schedule Blocks are the actual blocks of time that clients can request services in. These can overlap (for example, you can have an "All Day" Schedule Block where your clients who do not need a specific time can request visits).
The "Client Time Display" in the Scheduler Configuration is a tool we created to help auto-populate what time we will show to your clients if you have exact times disabled. The "Client Time Display" times cannot overlap.