Sessions can be enabled or disabled on the chart for each individual exchange through the "Inputs" tab of the "Settings" dialog box of the indicator. The exchange names can also be enabled or disabled in the same tab.
The included exchange sessions in sequential opening order are:
And additional session is included to account for the 2 hour timespan between the New close and the Sydney open, when all exchanges are closed but still there is someone out there trading the Forex. I don't need to nominate you, since by now you already know who you are.
A future release of the indicator is planned to automatically adjust the opening and closing times of each exchange by the Daylight Saving Time.