Automatically add all/some contacts from within your own organisation.
The ability to move all of our users over to Skype for business away from Skype is really hindered by the fact no one will have each other added. The only way we can see this working out is if everyone manually adds each other after signing in.
There really should be a way to find all users within your organisation so you can tick who you wish to add, or just a "Select all" tick to add every one.
External addresses could be added from this point on wards.
Kristian Junkov commented
There should simply be a tab for all 'internal' users driven from the data in Office 365 / Azure AD / Local AD..
Germán Barbosa commented
You can create a group with all your Organization users, and then send a email to your users asking them to search for the group email address in sthe sfb and add the contact.
this create a group in the groups tab with all the users.