Reset All Mojave App Permissions
Some categories, like the one you mention, aren't listed in System Preferences.

You can reset that one in particular with this command:

tccutil reset AppleEvents


Or, you can reset all app permissions like this:

 tccutil reset All


You can also add an app's bundle identifier (e.g. tccutil reset All com.apple.Terminal) to reset only that app's permissions.