Hi Danny-
Thanks for reaching out, and thanks for using the Post and Page Builder plugin for WordPress.
Generally speaking, it’s not exactly possible to make a Paragraph element span two columns- the columns act as containers for the elements within them.
One way that you can accomplish something similar is to use separate rows to do this. There is a pre-made layout to help you accomplish this.
Click on the (+) Add Block Component button, and then select the Layout option.
Then, look for the layout design with one row atop two columns: