Posted on March 24, 2020
Virto SharePoint Calendar for Office 365 displays multiple categories from Outlook, has an option to select data storage location, get attachment support, and option to copy a data source.
Posted on November 2, 2018
Virto Office 365 Calendar app has an ability to add external users to SharePoint calendar and an option to allows access for a certain calendar to all calendars and data sources created on current site collection.
Posted on March 21, 2016
Sharing calendars in Office 365 with co-workers and external users is an everyday thing in business and corporate communications. Microsoft Office 365 provides a number of solutions for calendar sharing and creating Office 365 group calendar. You might consider using third-party apps like Calendar Overlay Pro to overlay multiple group calendars in one place.
About the author 
Meet Kristina Melnikova, writer at VirtoSoftware. With a deep passion for IT products, she's a master at translating technical and business complexities into easy-to-understand content. With over 12 years of experience in software and app writing, Kristina's expertise is unmatched. At VirtoSoftware, she plays a vital role in effectively promoting their innovative solutions. Join Kristina as she demystifies the world of IT products, making them accessible and enticing to everyone.