If you have a Microsoft 365 Standard, Microsoft 365 Premium, or Microsoft 365 Apps for Business, you can activate the Microsoft desktop apps (Word, Excel, PowerPoint, Outlook) on any combination of up to 5 PCs or Macs, regardless if they are owned by the company or by you personally.
Microsoft's instructions on how to install the Microsoft desktop apps on a computer that's not managed by Pinnacle: Install Microsoft 365 apps - Microsoft 365 admin | Microsoft Learn
If you need to install Microsoft apps on a machine managed by Pinnacle (or need to change your Microsoft 365 license level), let us know and we'll make sure that change gets made for you.