Within Mix Control, setting the routing preset to 'DAW Tracking' will let you monitor your input signal essentially after PT, so including any EQ/Plugins/Processing on the channel you're recording to. With this setting, input monitoring within PT must be activated.
Setting the routing preset in Mix Control to 'Zero Latency Tracking' will have you monitoring your input signal directly from the Input of the Scarlett, so essentially hearing what PT is hearing, pre any EQ/Plugins/Processing. When in this mode, you are best to disable any input monitoring within PT as this would result in a doubled effect.
Please note that the above settings simply refer to how you monitor your input whilst tracking, in both settings you will be able to playback your session from your DAW and monitor what you have worked on.
Hope this helps.
Please do let me know if you have any other questions.
Simon // Focusrite Technical Support