Update Zammad Roles by Excel

This n8n workflow allows you to update user roles in Zammad based on data from an Excel file. The workflow automates role assignments, ensuring efficient and consistent updates. Features Excel Integration: Import user data from an Excel file containing emails and role assignments. Dynamic Updates: Match Zammad users by email and update their roles. Error Handling: Continue workflow execution even if some updates fail. Customizable Variables: Configure Zammad API URL, API key, and Excel file URL. Usage Import the Workflow: Upload the provided .json file into your n8n instance. Set Variables: zammadbaseurl: Your Zammad instance URL. excelsourceurl: URL of the Excel file containing user data. A

Help me set up the n8n workflow "Update Zammad Roles by Excel" (https://n8n.io/workflows/2598). It uses: HTTP Request. Import the template JSON into my n8n instance, list every credential I need to create, and walk me through testing it.