The user has the capability of merging events to multiple calendars. There are two ways to access advanced settings. The first is via the Add-on menu. Select Event-o-Matic, hover over More and click Enable Advanced Features. The second way is via Configure. Click on the Letter A with a checkmark on the top bar. You can tell if advanced settings are enabled: if the icon is green, you’re ready to rock!
An additional step is added during the configuration process. Users have the choice to Merge on Form Submit. An additional step is added during the configuration process. The merge on form submit will create an event every time a form submission is received.