Creating different margins on the first page of a word template

I have a letterhead template and I need the first page left margin to be larger than subsequent pages.

I've seen the option of placing a text box or image box in the header to push the text but this ends up throwing off the tabs and bullet list indentation markers.

I thought of setting up the first page using two columns and pushing the text to start on the second column but I can't seem to find a way to get the text to switch back to 1 column on the second page when it is created from text overflowing.

Does anyone know how something like this is possible?

Thanks in advance, Paul

I know this is an old question, but it came up in my results as I was searching for the answer.

What you need to do is click somewhere on the template where you want the new margins to start to apply, insert a continuous section break, click somewhere below that continuous section break, go to your custom margin settings, and select apply to "this section."

This is a little better than the "after this point" option, because that option inserts a page break section break, which does not work for the OP, because they wanted to keep their template one page long. By inserting a continuous section break instead, you can keep the one-page template and new margins will automatically apply when the user reaches their second page.

To create a different margins on the first page, go to page setup, click the layout tab, click different first page. I have to do this every year to edit our stationery, and have to look it up each time. Maybe now I'll remember.screenshot showing the different first page menu