Due to software limitation, if you use the Intel® Quartus® Prime software version 16.1 and earlier for Intel® Arria® 10 device, you will not find Triple-Speed Ethernet(TSE) transceiver channels in transceiver toolkit, even you turned on option 'Enable Arria 10 transceiver dynamic reconfiguration' .
To support transceiver toolkit for Triple-Speed Ethernet IP, use the Intel® Quartus® Prime software version 17.1 and later, and turn on option 'Enable Native PHY Debug Master Endpoint' in IP setting.