PD365 can be installed on 2 PCs as long as they're both yours and you won't be editing on them simultaneously.

If you try to install on more systems than are allowed, you'll get a notice that you've reached the limit and will need to uninstall the program from one of the other computers before you can install it on the one you got the message on.

That would be nice, I will keep my older workstation also, just for testing. Recware: DJI Osmo Pocket, GoproHero7Black, PanasonicFZ300/HCX909, Sony PXW-X160.
Software: Vegaspro365+Vegasaur/PowerDirector365
Hardware: i910900k,32GB,GTX2080s, 1920x1200 display
Playware: Samsung Qled QE65Q6FN, Philips 55PFL7108

Quote I'm planning to upgrade my i7 4770 workstation to a i9 10900 workstation in near future. Is there a quick way to transfer my PD365 subscription to this new workstation or is it possible to use PD365 on both?

3POINT, I don't know how many workstations it's permissible to load your 365 version on. There was a nice CL FAQ at one time but it has since been removed, refer to a prior discussion here: https://forum.cyberlink.com/forum/posts/list/79669.page#post_box_327578

That CL note "Note: One subscription plan is for single (1) PC use at a time only." is difficult to locate but it's at the bottom of the current Director Suite 365 spec page, https://www.cyberlink.com/products/director-suite/specs_en_US.html , and to my knowledge is the only CL official position provided to users, at least that I've found.

The EULA you agreed to during installation does not provide clarity on this issue.

Jeff

It's not my intention to use PD365 on different workstations, but it would be nice when possible. Therefor my original question was how to transfer to PD365 form my old workstation to the new workstation? Recware: DJI Osmo Pocket, GoproHero7Black, PanasonicFZ300/HCX909, Sony PXW-X160.
Software: Vegaspro365+Vegasaur/PowerDirector365
Hardware: i910900k,32GB,GTX2080s, 1920x1200 display
Playware: Samsung Qled QE65Q6FN, Philips 55PFL7108

Quote It's not my intention to use PD365 on different workstations, but it would be nice when possible. Therefor my original question was how to transfer to PD365 form my old workstation to the new workstation?

Jeff's posts don't change anything with regard to your situation since you'll only be working on on system at a time. I have PD365 installed on my Surface Book and my desktop and can run either one without any issues.

If you want to have PD365 install on only a single machine, there's nothing to transfer. Simply uninstall it on the old machine and make sure it's connected to the internet so the CL's servers will see that PD365 was removed.

Since this week I have a new workstation, transferring my PD365 subscription was no issue with application Manager, only that I had to download everything again, which took a while with my slow internet connection.
Now I would like to transfer the few projects I made on my old workstation to the new workstation, what is the easiest way to do that? I used in those projects also shutterstock music. I thought the easiest way is to pack those projects, but on my old workstation PD365 gives a message that's no longer available, because the subscription has been transferred.
Can I reactivate PD365 on my old workstation just for the time to pack my old projects and swap the subscription than back to the new workstation?
I made also a lot of Titles, Overlays etc on the old workstation, how could those be transferred to the new workstation? Recware: DJI Osmo Pocket, GoproHero7Black, PanasonicFZ300/HCX909, Sony PXW-X160.
Software: Vegaspro365+Vegasaur/PowerDirector365
Hardware: i910900k,32GB,GTX2080s, 1920x1200 display
Playware: Samsung Qled QE65Q6FN, Philips 55PFL7108

You can use Pack project Materials but don't upload to the Cyberlink Cloud. Instead save them to Google Drive or OneDrive so they can be downloaded on your other system. You can also use a USB drive (with sufficient storage space) to copy and transfer the packed project folders between PCs.

I will try next week to swap the data HDD's (6 and 2 TB) from my old workstation into the new workstation and expect that all my media and projects are accessible again for PD. Probably easier. Recware: DJI Osmo Pocket, GoproHero7Black, PanasonicFZ300/HCX909, Sony PXW-X160.
Software: Vegaspro365+Vegasaur/PowerDirector365
Hardware: i910900k,32GB,GTX2080s, 1920x1200 display
Playware: Samsung Qled QE65Q6FN, Philips 55PFL7108

Quote I will try next week to swap the data HDD's (6 and 2 TB) from my old workstation into the new workstation and expect that all my media and projects are accessible again for PD. Probably easier.

That should work. If possible, assign each drive the same drive letter as on the older system so PD won't have any trouble locating the assests.