Skype for Business meetings can be scheduled using the Office 365 Portal
Step 1
Select the Calendar view in the Office 365 Portal
Step 2
Click on New to create a new meeting invitation
Step 3
Add your desired recipients and any additional information
Step 4
Click the Online Meeting button to add Lync details to your meeting invitation.
Step 5
Add any call-in details to the footer of your meeting invitation under “Join Online”. Then click Send.