I would like to arrange the checklist options in my Configurable List Widget in a custom way:

I am not sure if I have understood your question correctly. Please explain your requirement a bit more in detail and we will try to help you. 

We will wait for your response.

There was a glitch and I made a new post with the explanation but I can't find it now.

I want to arrange my checklist options in rows, not columns. Is this possible?

Also, ideally I would be able to arrange the checklist labels position to be above and below the checkbox.

I was able to find your other thread URL where you have asked similar question: https://www.jotform.com/answers/1974024-How-do-I-custumize-the-Configurable-List-Widget-checklist-arrangement 

It seems one of my colleague already responded to you in the above thread.