You must be logged in to your concierge.com account in order to edit your profile. Click your name in the upper right-hand corner of the screen and select "Edit Profile".
Here you can update your Primary E-mail address, Password, Name and other Personal Information. The Timezone field is important so that the system knows from what timezone emails are being sent (through concierge.com). You will find US Timezones under "America/___".
"Notification Settings" dictate how you'd like to be notified when a guest checks in to one of your events. You must also set the "Event Check-In Notification" on the event specific Check-In page.