You can add more accounts to the LG smartphone calendar to use and synchronize their calendars, and you can add Google and Microsoft Exchange accounts to the calendar.

Android 9 | LG UX 9.0
Step 1:  Open the  Calendar -App
Step 2:  Open the  Menu
Step 3:  Open the  Settings
Step 4:  Tap on  Account & sync
Step 5:  Tap on  Add account
Step 6:  Choose between  Exchange ,  Google  and  Microsoft Exchange
  1. Open the Calendar-App
  2. Open the Menu
  3. Open the Settings
  4. Tap on Account & sync
  5. Tap on Add account
  6. Choose between ExchangeGoogle and Microsoft Exchange

LG Instructions