A good way to achieve this is to create two different WP pages and then have your content in there along with the following shortcode pasted in –
[show_post_snippets number_of_columns=3 post_count=6 image_size='medium' show_meta='false' terms="inspiration,technology" taxonamy="portfolio_category" post_type="portfolio"]
For each page, you would specify one of more categories you want to display in that page as comma separated string as shown above. Hope this helps.