1. If this is the first time you're running Outlook and you'll see the screen below click on the "Make Outlook the default application..." preference, if you want it to be the default and then click on Add Account.
If you don't see this screen above, the just start Outlook and then click on the Outlook menu item, then Preferences, and then in the box that appears click the Accounts icon under "Personal Settings" to get to the screen in next step.
2. You'll see the "Accounts" screen. Click on the Exchange or Office365 button to your account. If have another email account configured, you won't see the "Add an Account" message and instead will see your list of current accounts on the left-hand side. If so, just click the + button at the bottom to add a new account and choose "Exchange" from the drop-down list.
3. A sheet drops down asking for your account credentials. Add the email address and password provided to your by your Administrator or LunaTech Support as seen below. When complete, click on Add Account.
4. As the account is now added, you may see one or two pop-ups asking you to allow redirection to the Exchange server allocated to your account. Put a check mark in the "Always use..." preference and click on Allow, as seen below.
Your account is now added and you're ready to send/receive email from your new account.
Note: If you've removed an account you've had for a long while and added it to a new machine (or the same machine, as it may happen sometimes) your email, contacts, and calendar items could take a while -- sometimes a day or more -- to synchronize between the server and your Outlook client. This is normal behavior and is dependant on the size of your Exchange account and your Internet speed.