Working copy of RH 2020 while preparing for full upgrade?

Greetings,

Does anyone have any input about strategies that helped you minimize the impact to current documentation work while upgrading to RoboHelp 2020? Since the RH 2020 skin is quite different it seems that it will take a while to customize it. If you customized the skin, approximately long did it take you? Did you encounter any unexpected obstacles?

There will also be a period of time required in my organization for approval. (The approval process won't be quick as it is a busy project season.) I was hoping our single copy of the RoboHelp license would allow me to download RoboHelp 2020  on a separate PC or laptop to set up the skin and other customization, while at at the same time continuing the daily documentation work with RH 2019 on my PC while the approval process is underway. The licensing administrator for our organization informed me that it's not possible to have multiple versions of the software on the same PC, which I figured would be the case, but I'm still wondering if there's a way to install RH 2020 on another PC when an organization such as ours has a single license. (There are two of us using the license btw.)  I would like to be able to ask Adobe about this matter myself to do some more research on my end since the licensing administrator is responsible for licensing of all kinds in the organization and isn't a tech writer, but when I tried to access Adobe online support, I received a generic message about contacting the licensing administrator for the organization. I suppose another option could be to download RH 2020 as a trial on a separate PC or laptop -- has anyone taken an approach like that? How long is a trial avaiable?