Your photographer should be able to help provide one for you! Ours gave us a starting point and then we made edits from there. Also, a lot of people browse Pinterest for shots that they like and want to recreate.
I looked on Pinterest for inspiration photos. I wanted some unique poses rather than just the typical ones. The three I included are from my wedding and are based on photos I saw on Pinterest. It is hard to tell you exactly what groupings and things to do because we don't your family dynamics or your personalities. Some people like super serious photos others like more funny photos. I would browse Pinterest for ideas.
Honestly, moments happen and it’s up to your photographer to capture them as your day unfolds. Unless there are specific poses or key moments of the day you want to make certain are captured, which I would make my photographer aware of, I would trust them to capture every moment as it is.