How can I schedule a meeting from my calendar?

Open Calendar. By default, month view is displayed.

Double click on the date slot you want to set up the meeting. This launches ADD EVENT pop-up:

Enter title, other info, click 'Add Invitee' link to enter invitees. Start entering the name of the invitee and suggestions (Only from the domain) will pop-up. Currently, we don't support outsiders.

Select the invitee from the list. 

Click SAVE button and invitation will be sent to the invitees.