Hi Writeonsister,
Your theme uses Twitter Bootstrap grid to lay content out. It’s quite possible to add more portfolio projects by changing the grid and make each project smaller so that more fit on one line. Alternately, you can add more portfolio projects of the same size as the present by spanning over multiple lines.
The template file you need to tackle is index-projects.php. Furthermore, if you want to set up the additional projects from the options panel, you’ll need to modify projects_settings.php inside the functions > theme_options > pages directory.
Obviously, you’ll need a child theme to carry out the job.
It’s quite a lot of work and I’m not sure it’s worth it. In fact, 4 key pieces as featured portfolio work makes a lot of design sense, especially given that users have the option to view all projects by clicking the appropriate button.
I hope this helps ??
– Maria Antonietta