Is there a way to break the items within that Purchase Order into sections to categorize them?

1. I see I can only add one Purchase Order per Form. Is there a way to
break the items within that Purchase Order into sections to categorize them
and make it easier to search?

This is possible, please follow this guide: https://www.jotform.com/help/178-How-to-Have-Sub-Category-or-Sub-Labels-on-an-Order-Form 

Let us know if you need more help on this.

Hello,
I followed those instructions, input the CSS into the "Inject Custom CSS"
area, and nothing changed. Can you confirm that I put together the custom
CSS correctly? See below:
input[id*="*1052*"], input[id*="*1053*"], input[id*="*1054*"], input[id*="
*1055*"], input[id*="*1056*"] {
display:none;
pointer-events: none;
}
input[id*="*1052*"] + label > .form-product-details, input[id*="*1053*"] +
label > .form-product-details, input[id*="*1054*"] + label >
.form-product-details, input[id*="*1055*"] + label > .form-product-details,
input[id*="*1056*"] + label > .form-product-details {
display:none;
}
label[for*="*1052*"], label[for*="*1053*"], label[for*="*1054*"],
label[for*="*1055*"], label[for*="*1056*"] {
font-weight: bold;
text-decoration: underline;
pointer-events: none;
}
Thanks,
Roy
...

May we have the form ID  you're using as I can't seem to find the form with your css code?

We will wait for your response.

Thank you.

Sorry. I removed it from the form when it didn't appear to be working. I
didn't want stray CSS in there. I've re-added it to the form located at
https://form.jotform.com/81426057172151
Best,
Roy
...

You need to remove the following dots:

See the result in my clone version: https://form.jotform.com/81436506251957 

Let us know if you need more help.

Thank you! Is there a way to remove the word "Free" from next to the
header? See attached
Thanks,
Roy
...

Please inject the following code to remove the word "Free": https://www.jotform.com/help/117-How-to-Inject-Custom-CSS-Codes 

#input_23_1052_price,#input_23_1053_price,#input_23_1054_price,#input_23_1055_price,#input_23_1056_price{

    display: none !important;

}

Let us know if you need more help.