Based on the number of users accessing the report contents, you are free to choose between Single user, Multi user, and Enterprise License. The purchase options will depend on the type of user license you wish to choose. 'Single User License' grants access to a specific report for one person only and must not be shared with other employees.
'Multi User License’ grants access to a specific report for two to five users only within the same department within the same company. ‘Enterprise User License’ grants access to a specific report to a company wide audience. This includes subsidiary companies or other companies within a group of companies.