When you first sign up for Sellbrite for Shopify, you'll be directed to the Connect a New Sales Channel page where you can connect all of your online marketplaces to Sellbrite.
Connect your marketplaces
On the Connect a New Sales Channel page, select Connect for the marketplace you want to add.
Follow the on-screen instructions to connect your account. For most marketplaces, you'll just need to provide your login credentials. Some channels have additional requirements. For example, Walmart requires your Client ID and Client Secret, and Google Shopping requires your Google Merchant ID.
Once connected, Sellbrite will automatically begin importing all of your existing listings from that marketplace.
To connect another marketplace later, go to Settings > Sales Channel Integrations > Connect a New Channel, select Connect for the channel you'd like to add, and follow the instructions.