Optimizing Conversion Funnels: Unique User Tracking and Data Filtering

For the start of the funnel, I’m using the [Auto] Page View with a filter on the specific URL that I want to identify when a user lands on the page and starts the conversion funnel. Is there a way to filter that Page View to be for Unique Users somehow, so that the same user coming back to that page later that day, for example, doesn’t count it as a second page view on that event?

Is there an easy way to create a group of users that I can then omit in the funnel to prevent those User IDs to contribute to the funnel report? I basically want to omit some of our own users as we are testing the flow ourselves and are polluting the data. There’s a way to add a filter where the User is not an email or ID, but I’d have to add users individually every time, where I’d rather manage a Group of Users and use that Group in the filter mechanism.