Junction Builder allows you to create multiple junction records with minimal efforts. You can drag and drop the component on any record detail page and configure accordingly to create mass junction records.
We show Salesforce accounts that are linked to Trailblazer.me and have the Manage Billing permission. If your account is missing, check that you connected the account to your Trailblazer.me profile. Then verify that you’ve been assigned the Manage Billing permission in the related org.