i am currently developing an outlook add-in using office-js. i tested it in outlook 365 , outlook 2016 and in the web version and it works good. but when trying to add it (to add the manifest file) in the company outlook ( Microsoft outlook Professional plus 2013 ) . i can't find the Manage Add-ins button on the Info tab. following this article. https://learn.microsoft.com/en-us/office/dev/add-ins/outlook/sideload-outlook-add-ins-for-testing#outlook-2013
is there any way to add the manifest file in the outlook client of 2013 version