Although there's no direct option to adjust the page break line, there are other ways to manage it.
First, on the Finish up & Preview page, please click Adjustments and you'll see the options to change the Line height and Sections spacing:
You can change the value, together with the font size as well, depending on how you want the content of your resume to appear.
You can also disable the Section Divider (horizontal line icon) option to further decrease the space between sections.
Lastly, you may download the file and edit it outside of Rezi, though we don't usually recommend this to keep the quality of your resume in line with the best practices.
For further assistance, please visit our User Guide, use the support chat on the right side of the screen, or email us at support@rezi.io.