How do I add deviations to a gallery or group when submitting?

When submitting a deviation to DeviantArt, you can optionally add the deviation to a gallery or a group you participate in. 

To submit a deviation to one of your galleries, upload a file and then scroll down to the gallery section, where you can select the galleries you want the deviation to be included in.

To submit a deviation to one of your groups, go to the “Submit to Group” section just beneath the gallery section and click “Add.” From there, select the groups you want to submit the deviation to, and you’ll be prompted to select the groups’ galleries.
Please note: The “Submit to Group” option will only appear if you’re an admin in a group and have permissions to submit deviations to that group.