A license is always limited to 1 entity (company or organisation or individual). This means other companies cannot use that same license, also not when they work for the same client.
If a design agency creates a corporate identity for their client, let’s say a dentist, then that dentist would need its own license to use the fonts in his invoices.
Another example: if an agency asks an external freelancer or other agency to work on a certain project, that other agency or freelancer needs to have their own license for the fonts they are working with. If a certain advertisement campaign is created with (one of) our fonts, and multiple companies create work (print ads, tv commercials, web games, etc) for this campaign, then every company needs to buy their own license for the font(s).
You cannot share a license with other parties. You may also not send the fonts you licensed to other companies or people. Every entity needs to have their own license, and needs to buy the fonts if they use the fonts.