By default, the agent will collect all the Ethernet interfaces (ifType 6) and the Aggregate interfaces (ifType 54 (propMultiplexor) & 161 (ieee8023adLag)) that are available on the device, including the management interfaces if the switch reports them as standard Ethernet interfaces.
Add more interfaces
If you want to collect more than the regular Ethernet interfaces (IANA ifType 6 (ethernetCsmacd)) and Aggregate interfaces (IANA ifType 54 (propMultiplexor) & 161 (ieee8023adLag)), this can be configured in the Device Advanced Parameters. The option Interface SNMP types to collect is a list of comma-separated IANA ifTypes of the interfaces you want to collect. To collect all available interfaces, select the ifType 0 (zero).
Ignore some interfaces
If there are some interfaces you want to ignore during the collection (e.g. some management interfaces), this can be configured in the Device Advanced Parameters. The option Interfaces SNMP Indexes to ignore is a list of comma-separated indexes of the interfaces you want to ignore. To know the exact index for the interface you want to ignore, put your mouse over the interface name and the index number will be displayed in the tooltip.