Don’t know how much you can customize your workflow…but you can set a default destination by first making it a destination in that tab, then going into prefs and setting the default destination (only allows you to choose from preset locations)
I hate the “source” compression because it puts files all over the place. I have a single “encodes” folder on my desktop and EVERYTHING encodes into that…then I place it into appropriate project folders.
THere also is a setting inside each compression setting to set the destination BASED ON THE SETTING. That gets a bit tweaky if you forget it’s doing that…depends on how much you want to/are able to babysit your machine.
-Jason