Chronoligically lists posts under each category

You should be able to add this line above your loop on the category template:

query_posts( array ( 'category_name' => 'my-category-slug', 'posts_per_page' => -1, 'orderby' => 'date', 'order' => 'ASC' ) );

You will have to write some code to pass in the actual category slug you need depending on the category the user chooses.

Thanks…..that lets me out I am afraid. I don’t write code at all….scares me to death. For now, I will just live with it.

I realize that putting code into a template can be daunting. I have searched through the plugins and most want to do re-order by drag and drop. Here is a function that you can copy and paste directly into your functions.php in your theme (or your child theme) and it should sort all posts by date in ascending order. I know you don’t like to code but perhaps just copy and pasting a block of code into a specific file might be easier. I do apologize but I code most of my solutions myself and try to stay away from plugins for simple things.

// Runs before the posts are fetched
add_filter( 'pre_get_posts' , 'my_change_order' );
// Function accepting current query
function my_change_order( $query ) {
	// Check if the query is for an archive
	if($query->is_archive)
		// Query was for archive, then set order
		$query->set( 'order' , 'asc' );
	// Return the query (else there's no more query, oops!)
	return $query;
}