In the TikShop Admin, you are able to set global settings that will automatically apply to new feeds that are added to your store.
To update your default feed settings, go to the Feed Display tab under Feeds.
Choose the settings you would like and hit save at the bottom. This will automatically apply the changes to any TikShop feeds that are using default settings.
When creating or editing a feed, you can also check "Custom Display Settings" to use a layout that is different than your global Feed Display setting.