Yes. That will just depend on your content. Please just note that we can only go as far as showing how to add content above the portfolio template. It is the user's responsibility to design and code the custom markup you'll add to it.
In place of static HTML, you create content using the Global Blocks feature. See https://theme.co/apex/forum/t/global-blocks/24723. Once you've created a block, you can copy its shortcode and use WordPress'
do_shortcode function. If you're not familiar with PHP though, I'd recommend that you consult with a third party developer to assist with custom development.