Lead Developer
Hi Oleg,
You’ll want to look through the BuddyPress documentation to get an idea of what template files you can duplicate etc..
This may be helpful: https://codex.buddypress.org/legacy/theme-development/the-bp-default-theme/building-a-buddypress-child-theme/
To execute a shortcode in a PHP file, you’ll want to do this: <?php echo do_shortcode( '[your-shortcode]' ); ?>