I don't have a login to your GA4 property, and I wouldn't change settings without your approval anyway, so I won't set anything up today.
Two things to know first: - GA4 enhanced measurement records a scroll only once per page, when a user reaches 90% depth. Google says scrolls fire when "a 90% vertical depth becomes visible". Scroll points at 25, 50 and 75 percent would need a custom event, and the Tag Manager setup steps for that are not confirmed in the sources I have. - Enhanced measurement video events cover YouTube embeds that have JS API support. Vimeo or self-hosted players are not covered in my sources, so "everything" depends on which players your pages use.
To plan this I need:
- questions: what the team wants to learn from scroll and video data, in their words.
- settings: whether the Scrolls and Video engagement switches are on for the web stream, whether the property is standard or 360, and how many event-scoped custom dimensions are already registered, since custom events may use that quota.
- pages: the page paths with video or long content, views for one period, and the video player on each page, plus whether JS API support is on for YouTube embeds. If you don't know the player, I'll mark it unknown and ask.
What you get back: which questions GA4 already answers, video coverage by page with view counts, the custom dimension count against the limit, and a list of proposed changes. Changes are made under Admin > Data collection and modification > Data streams, with the Editor role or above.
Needs your decision: every switch, custom event and custom dimension in the plan stays HELD until you approve it.