Question:

Why The Scheduler Pane Is Not Visible In Lightning For My Schedule?

Answer:

There are few extra conditions which need to meet in order to view the pane:
 
Display Conditions:

• A new Scheduler pane displays when the End User has the following permissions:
  • OLS Read to Account_vod and Address_vod
  • FLS Read to
    • Account_vod.Account_Formatted_Name_vod
    • Account_vod.Account_Identifier_vod
    • Address_vod.Name, City_vod, Zip_vod, Primary_vod
    • Address_vod.Name (Address Line 1)
    • Address_vod.Address_line_2_vod
    • Address_vod.City_vod
    • Address_vod.State_vod
    • Address_vod.Zip_vod
    • TSF_vod fields
    • Address_vod.Primary_vod
  • OLS Read to View_vod

Related Documentation:

CRM Help Documentation: Lightning for My Schedule