I have been trying to make this n8n workflow for a clinic that uses cliniko as there scheduling program. i have never used it before and have been having issues with connecting it with n8n as it keeps coming back with validation errors. I was hoping that there was someone here who would be able to help me overcome this issue and provide me with guidance. Feel free to reach out, a guru on this topic would be greatly appreciated and would not go unnoticed.

I started a ai agency and the service I sell is a lead outbound qualifier and appointment booker. It also stores and organizes information in a crm. The tools I use for this are n8n for connecting everything, retell ai for the caller, twillio for the phone number provider, airtable for the crm, and cal.com. Now I want to take all of this and make a custom fronted dashboard so my clients can see everything like what my business is doing for them and the data within the separate tools, is this all possible? If so would it be better to build new dashboards for each client or all have one where they login and only see their information within the dashboard. Any and help would be gratefully appreciated!