Automatic Calculations when a change is made

Good Morning - We are still new to OPC and are noticing that when making changes(dates, relationships, lag, etc.) to a project OPC does not seem to automatically calculate like P6 did. I have looked everywhere I know to, but do not see a setting for this like there is in P6(to turn automatic calculations on/off - this option is a checkbox in the scheduler options in P6). Is there an option to turn automatic calculations on in OPC or will we have to run the scheduler every time we make a change to see its effects?