CorelDRAW X8 no longer needs to be activated (after it has been installed with a product key or serial number) as had to be done with previous versions of CorelDRAW.
With regards to installing CorelDRAW on more than one computer: the Corel EULA says you can install CorelDRAW on up to three PCs, but you can only use it on one (1) system at any given time
In a corporate environment it is necessary to provide each employee with a different serial number or product key or to buy corporate licensing to allow any specific number of licenses to be used at the same time (“Concurrent Use”). It is illegal to allow two or more employees to use the same licence number at the same time.
Sam and Simone need their own license (product key). Sam can install CorelDRAW X8 on his PC at the office and on his laptop PC at home because he is either working from the office OR from home. Similarly, Simone can install CorelDRAW (using her own license / product key) also on up to 3 systems; at the office, on her laptop and at home; she only use CorelDRAW on one of those 3 systems at any given time.
CorelDRAW automatically updates the number of installations available to its product key or serial number each time a user installs or uninstalls CorelDRAW from their systems. For example, Sam decides to remove CorelDRAW X8 from his home laptop PC. After it is uninstalled from the home laptop PC, his product key or serial number is registered to only one PC (the one at the office) listed. So, he has two installations available with this product key.