In previous Android versions is was possible to move apps to the SD Card. In Marshmallow, I was prompted to choose if I want to use My Micro SD Card as external storage or to extend internal storage. I chose to use it as external storage because I need to use it in My computer without a cable. In Marshmallow, the option to transfer apps to SD Card didn't seen to appear. Someone else I know chose to extend internal storage using the Micro SD Card. On that phone, the option still appears. We both have a Moto G2.
Without root and a 3rd party app like Link2SD, it is not possible in Marshmallow because Google removed that capability from Android. If you accept an OTA from Lollipop to Marshmallow, Apps currently on SD will remain there but no additional apps can be moved to the SD card under Marshmallow.