To add another pen name to your account, you can write in to firstname.lastname@example.org and request for the ability to add multiple pen names!
You'll be able to publish stories from different pen names under your original account. Once it's been enabled, you'll find a "Manage Writers" section in Writer's Web. Click "Add A New Writer" to add more pen names to your account. When creating a story, select the pen name that the story will be published by. Each pen name will have its own author page in the app!
Note: Readers will still see the original pen name of the account in the comments section. If you would like to engage with your readers, they won't see the pen name associated with the story.