Office 365 groups
Office 365 groups - why can't we bulk add? these are groups so by default we are saying many people.. you should be able to import a csv file
Talliyah Leshay Draper commented
There should be a section for contacts
Regarding Office 365 Groups;
Groups are awesome, what would make them even better is if they had a "contacts" section where users could add contacts that can be shared with the group.
Right now we are using shared mailboxes so people have a central location for contacts and contact groups. If we could move away from this and let users create an Office 365 Group it would be perfect.