side bar questions

Hello,

I didn’t understand your question clearly. You can find left and default sidebar in the Appearance > Widget.

Which Icon – Do you mean checkbox before the product categories?

Hello,

Add the below code to the Customize > Custom CSS section to change it. In the place of the arrow, add your content.

.widget_product_categories li a:before, .widget_layered_nav li a:before {
    content: ">>";
    border: transparent;
}

You’re welcome!