sharepoint online – Custom Communications Template with right column

The default Communications template Hero display occupies the full length of the page and has one large image block on the left half of the page, and 4 small image blocks on the right half of the page. However, we want a default Communication template with the Hero blocks occupying 2/3 of the page, and have Events occupying 1/3 of the page length. Is this possible?

The default Communications template Hero display occupies the full length of the page and has one large image block on the left half of the page, and 4 small image blocks on the right half of the page. When I add a new template through SPO Powershell commands, I can define the colors with a theme, and define navigation options. Question: Can I define a different homepage layout? We would like a default Communication template with the Hero blocks occupying 2/3 of the page length, and have Events occupying 1/3 of the page length. Is this possible?