After updating to Android Marshmallow (6.0), can't figure out how to store podcasts on SD Card

Hello,

I am using a Samsung Galaxy 5 on the T-Mobile network in the USA. This week T-Mobile pushed out the Android Marshmallow update (6.0) to my phone. Before the update, I had configured doggcatcher to download new media to the SD card (I only have about 1-2GB free storage in the phone directly, and have augmented it with a 64 GB SD card.

After the marshmallow update, Doggcatcher seemed to have stopped recognizing the SD card. Anything downloaded previously to the SD card is not recognized, and new files are now downloaded to the phone's direct storage. I do not want this.

I went to the settings, then the miscellaneous button, then the storage directory button, i have no idea which directory to choose in order to download media files top the SD card. The default root directory from the 'browse' option is /storage/emulated/0. What directory do I choose to download to the SD card?