*NOTE: This was a response I wrote to a query about updating PowerPoint to include the Designer feature. This will update PowerPoint, Word and Excel.
1. Download Microsoft 365 from the web: https://microsoft365.com
2. Sign in to the PowerPoint app / Active the License.
- Wait for the software to download.
 - Open PowerPoint, create a new presentation.
 - Click Activate.
 - Click the second option to active your license.
 - Sign in with your Lindisfarne email.