Making Separate Parts Able to be Visible to Viewers

Hi, I am trying to get my score to be able to separate parts such as that on this score of 'New Donk City'. I am having troubles with this, as the parts are visible while on the Musescore application, but not while viewing the score on musescore.com. When exporting the score, I have the option of showing parts, but even after selecting that option and publishing the score, I still do not see any differences in the ability to view individual parts. I am wondering if I would need to do anything with in the program, or purchase musescore pro to have the individual parts able to be isolated. Thanks.