What's the difference between limited and extended hours in the Availability field?

Limited and extended hours in an Availability field involves setting the time availability for different periods depending on individual or organizational requirements.

This is controlled by an administrator and there's no other difference here other than the nomenclature as you've to set the start and end time for the availability schedule, for both, without any validation. However, from a usability perspective, if required, you can set lower hours availability for limited use, and set extended hours if you wish to set availability for periods that are more than the regular hours.