These are two factors that would cause them to use Schedule instead of Routes. Schedule is a feature that allows users to create and optimize a schedule of appointments for a day or a week3. Schedule requires all appointments to have a start and end time or duration4. Schedule also lets users sync their appointments with their Salesforce calendar as events3. This way, the users can plan around other events currently on their Salesforce calendar and avoid conflicts. Routes is a feature that allows users to create and optimize a route of stops for a day without requiring scheduled start and end times or durations3. Routes does not create Salesforce calendar events or sync with the Salesforce calendar5. Therefore, Schedule is more suitable for users who have meetings with fixed time slots and who want to coordinate with their Salesforce calendar.