Export
Once you have created all the toolpaths you need, you can save out the different toolpaths for your machine.
Select the appropriate post-processor for your machine. It is likely that your machine has only one post-processor, but if not, then use the one suggested by your machine manufacturer.

You should check the toolpath preview in the view to make sure that the toolpaths are what you expect. Also, make sure you're using the correct cutting data from your tool database and that your toolpaths have been updated to use them.
Select each toolpath you wish to save by clicking on the checkbox next to the toolpath name.

Then click on the 'Export' button. This will post-process the selected toolpaths and they will automatically be downloaded to your computer.