Possibly the most simple Alpha move ever is to sit at the head of the table during dinner.
If you aren’t eating at the table together, start doing it. If you have the atomized family thing where people cannon all over the house with plates direct from the kitchen, just setting the table creates social inertia towards eating together. You don’t have to announce it as a thing, just set the table.
If you worry that someone will beat you to the punch and steal your seat, the easy move is to have a drink of any sort, drink some, and leave it at the head of the table where you want to sit. It’s a social no-no to touch peoples drinks and you mark your territory with your cup.
It’s a simple move, but it works by framing you as the most important person in the house. Sitting at the head of the table = Alpha Male of the Group. Everyone else at the table is de facto stating their social deference to you wittingly or not. After a few months of stating deference to someone, it tends to become internalized.
Also I love it when Jennifer sits to my immediate right. She’s close enough to touch from shoulder to waist and she can lean towards me. I’ve noticed that the last few times we’ve been out together we’ve been seated at wide tables and we’re physically far away from each other thus defeating the point of a romantic dinner. Our own dining room table is more intimate it seems. I’d much rather sit together than opposite each other any day.
Plus how the hell can you squeeze her thigh when you’re sitting opposite her without looking completely awkward?