Set Up GA4 Dashboard to Track SEO Signups (Screenshare Only)

I need a GA4 expert to help me build a focused dashboard using GA4 Explorations. My goal is to track user signups by traffic source — specifically SEO — and see video interaction data as a secondary priority.
What I need:

A dashboard that shows how many users from Non-Branded SEO completed a signup_complete event

A separate view that shows how many users from Branded SEO completed the same event

(Optional/secondary): Which videos were played (video_start, video_100_percent) — also segmented by SEO source

My current setup:

I already fire the signup_complete event via gtag on the thank-you page

GA4 is also capturing an unwanted sign_up event — possibly from earlier or platform-level tracking

I created a Modify Event in GA4 to rename sign_up → signup_complete, but I’d prefer to remove that and track signup_complete only from the thank-you page

What I’m looking for:

You’ll walk me through this setup live over screenshare (Zoom, Google Meet, etc.)

I want to be directly involved and understand each step — this is not a “do it for me” job

Please do not send login links or documentation — I’m looking for a real-time working session

Required Experience:

GA4 Explorations setup

Segmenting by Branded vs Non-Branded SEO traffic

Custom event tracking (like signup_complete)

Familiarity with Modify Events, and how to remove them cleanly

Bonus: Experience tracking video events and attributing them to traffic source

Please include a short note on how you’d isolate Non-Branded SEO traffic in GA4 and confirm you're comfortable doing this live via screenshare.