When the user needs to send an email alert to multiple email id's when some condition is true, the Action field is selected, and then Send Email is chosen. In the fields: To, CC, and BCC the user may not be able to insert multiple emails due to an incorrect format specified in the textbox and the fields may turn red or show warnings as shown in the image below.   There is a required format to be used to resolve it as given separator like comma (,) is not being accepted in the textbox.

 To set multiple emails in alert configuration, Please put a semicolon in between email id's with double quotes around each email id as shown below: "abc@tibco.com";"xyz@tibco.com" By keeping the above format, warnings will stop and multiple emails will be configured successfully for LiveView as shown in the image below: