Calendar

Setting up calendars is a two part process.
First, you must log into the server interface to create calendars and grant permission to other user to access them.
Then you need to configure your calendar client to access the calendars you created.

I Just Want a Calendar That All My Devices Will Sync With

Go to https://cal.domain.tld and accept the Security Certificate warning Login with your email address as your User Name and your email password for Password and click Go
	*Ignore the contents of this page for now, at the top of the page, put your mouse on UserFunctions and then select "View My Details"
Scroll down and find the blue bar labelled Principal Collections Identify under Display Name which line corresponds to your calendar (not your address book). Click the link in the left most column on the identified line. It will be a four or five digit number.
	Near the top of the page, take note of the value for DAV Path You will need this information to set up your devices, so either highlight and copy this or write it down.
To be safe, always log out when you are finished Proceed with setting up your calendar clients

Clients

How to set up Calendars in Thunderbird/Lightning