Hide Author Info and Show Comments

Hi,

I just update the EasyBlog from 3.9.1 to 5.0.5. I set the Altium theme to use in front-end. I am facing the following issues:
1. I cannot hide the section "About the author"
2. I cannot make visible the "Comments" section.

I search the theme template source files and I found the following part of code:

<?php if( $system->config->get('main_showauthorinfo') ) { ?>
<!-- Blog Author's section -->
<?php echo $this->fetch( 'author.info.php' ); ?>
<?php } ?>

<?php if( $system->config->get('main_comment') ) { ?>
<!-- Comment form and comment listings -->
<?php echo $commentHTML;?>
<?php } ?>

From where can I set these values in order to hide the author info and show the comments because I cannot find anything I Settings Menu.

Regards

Thomas