What are clock in/out types?

These are clock ins/outs with a name or a concept. They are used to differentiate between the category of clock in/out.

Some examples of the use of this would be: business trip clock in/out, meeting clock in/out, etc.

They must be configured from the company settings in Schedules > clock in/out types section. These clock in/out types can be configured for all employees or only for some of them. 

As an employee you can use these when clocking in, where you'll find all the clock in/out types that have been set up.