"Show Event Details on Multi-User Calendar View" is missing from Activity Settings in a Sandbox
|Knowledge Article Number||000221025|
|Description||In a Sandbox, "Show Event Details on Multi-User Calendar View" is missing when you navigate to Setup | Customize | Activities | Activities Settings.|
|Resolution||This can occur if licenses in the Production org were renewed since the Sandbox was refreshed. If you encounter this issue, you can either refresh the Sandbox, or use the Match Production License tool if you don't wish to refresh the sandbox. Only use the Match Production License tool if your Production org is currently Active.
For more information about the Match Production License tool, see Summer'15 - Match Production Licenses to Sandbox without a Refresh.