Sometimes it’s necessary to quickly add a template for a page into the Magento content management system. This can be done via a custom extension below is the quick fix if required.

Find the closing global tag </global> and add the following code above it. It will add two templates one from homepage.phtml and one for another-page.html which can then be set on the Design Tab in CMS > Pages.

<global>
    <cms>
        <layouts>
            <homepage>
                <label>Homepage</label>
                <template>page/homepage.phtml</template>
            </homepage>
            <another_page>
                <label>Abother Page</label>
                <template>page/another-page.phtml</template>
            </another_page>
        </layouts>
    </cms>
</global>