Time slot
A specific block of time offered as an option in scheduling.
A time slot is a fixed block of time marked off on a schedule. In scheduling, it is used to mean “a candidate time period,” and it is defined by a start time and an end time, for example “10:00-11:00.” Meeting room booking systems and online booking services are designed to manage availability in units of these time slots.
Designing time slots
Effective time slot design depends on setting a length that suits the purpose of the meeting. If a slot is too short, the discussion tends to end half finished; if it is too long, concentration tends to drop.
| Type of meeting | Example slot length | Reason |
|---|---|---|
| Morning meeting / stand-up | 15 minutes | Reports only; discussion happens separately |
| One-on-one | 30 minutes | Enough for a focused conversation |
| Planning meeting | 60 minutes | Needs both divergence and convergence |
| Workshop | 90-120 minutes | Includes hands-on work |
The 25-minute / 50-minute rule
Google Calendar and Outlook have a setting that automatically shortens meetings by ending them a few minutes early (for example, a 30-minute meeting becomes 25 minutes and a 60-minute meeting becomes 50 minutes). This secures about 5 to 10 minutes of buffer time before the next meeting, which can be used for moving between meetings or taking a break.
How you divide slots determines how easy scheduling is
What is easily overlooked is the increment of slot start times. If you cut slots only in 60-minute increments (10:00, 11:00...), a matter that needs only 30 minutes uses up a one-hour slot and fragments the calendar. If you use 30-minute increments as the base, and for interviews or meetings held back to back you set the increment to include a buffer for changeover (for example, a 45-minute interview + a 15-minute buffer = 60-minute increments), you can structurally keep delays from cascading. Once a slot design is decided, operations tend to be dragged along by it, so it is best to decide the increments before publishing a booking page.