Changing Post-type URL | WordPress.org

See if this works for you,

1. Open your theme’s functions.php file or create a custom plugin file for this purpose.
2. Add the following code to modify the rewrite rules for your custom post type:

function modify_gva_team_rewrite_rules($args, $post_type)
{
    if ($post_type === 'gva_team') {
        $args['rewrite']['slug'] = 'staff';
    }
    return $args;
}
add_filter('register_post_type_args', 'modify_gva_team_rewrite_rules', 10, 2);

3. Save the changes to the functions.php file or your custom plugin file.
4. After saving the changes, visit the WordPress admin area and navigate to “Settings” > “Permalinks.” Simply clicking the “Save Changes” button will flush the rewrite rules.

This code uses the register_post_type_args filter to modify the rewrite parameter of the “gva_team” post type registration. It checks if the current post type is “gva_team” and updates the slug value to “staff”. This way, the base URL will be changed from /teachers/ to /staff/.

Perfect solution! Thanks, @abretado1985! ❤️