Hello,
I want to add (duplicate) one more Sidebar categories block (with a different menu) below this one and before the Sidebar bottom (Bestsellers) block.
How can I do this?
It looks like a theme section. Find the existing one in your theme code, in the Sections folder, copy the code inside, and make a new section with the code you copied. Then update your collection template to include it right under the existing one.
How can I update my collection template to include it right under the existing one?
Find where the original one is in the code and make a new line like this after it:
{% section 'your-new-section-filename' %}
No, you need to look in the collection template for a line that looks like this:
{% section 'sidebartop' %}
and add your new section after it:
{% section 'sidebartop' %}
{% section 'sidebarcattegories' %}
Dear @gina-gregory THANK YOU THANK YOU THANK YOU 
You’re the BEST!
You’re welcome. Please consider marking this as solved.