I have tested my add in Outlook Web access but to complete the testing I need to sideload my add in to the Outlook 2016 client.
The only information I can find on this is located here and is out of date as I cannot get to the store from my latest version of Outlook
https://learn.microsoft.com/en-us/outlook/add-ins/sideload-outlook-add-ins-for-testing
Please can someone help me find some up to date documentation on this or just explain how I can load the add-in into Outlook 2016?
This documentation is current.