Monitoring PDCCH

Hello experts,
I read the following about search spaces
Search spaces are configured with
monitoringSlotPeriodicityAndOffset, duration and monitoringSymbolsWithinSlot.

Can someone give me numerical examples of integer number as defined in 331 that can help me understand these parameters. I would really appreciate any help. Also I don’t understand why monitoringSlotPeriodicityAndOffset have combined periodicity and offset in one configurable parameter? Then how does one integer value configure both?

Thank you