There are two places.
One is in User Preferences
1. Click the cog in the top right corner of your screen
2. Select User Options
3. Select Preferences on the left side of the screen
4. Look at Language and country/region preferences and select the time zone. This is for your specific time zone.
Second is in Compliance
1. Click on Compliance
2. Under set up select Legal entities
3. On the left you will see your company - click it and on the right under General you will see Time Zone. This time zone is for your company as a whole and will apply to all employees.
Be very careful changing time zones and I encourage you to speak with your Account Manager. We have had multiple issues with the time zones and they had use switch them to different zones as it would alter dates to the prior or next day based on the zone the administrator was in BUT they had us change them multiple times and has resulted in it being very difficult to correct them and we are still having issues. I would suggest not changing them without someone there to assist to ensure they work and testing it in the sandbox prior to implementing in production.
