In order to change the timezone that your event is displayed in, head to Event settings > Edit event details. The timezone you select will be the one that is displayed for anyone who interacts with your Eventree portal.
Find the Timezone field and select your timezone.
You can either scroll through the list:
Or type in the search box:
Whichever timezone you select will be displayed in the top banner.
Where does this appear?
There are a number of places where times and timestamps are displayed in Eventree.
Event log
Email log
Anywhere showing pass or meals redemption times, eg Export entry data, Details on an individual
Timestamps for received forms, eg time received