1. If you already use Google Calendar

You’re good to go — just make sure you’re adding your jobs there.
If your jobs are in another online calendar (like Outlook, iCloud, or a booking system), move on to Step 2.

2. If you use another online calendar (Outlook, iCloud, etc.)

All major calendars today can share or sync with Google Calendar.
Here’s the quick way to find out how for yours:

• Open Google and search:
  "Sync [YOUR CALENDAR NAME] with Google Calendar"
  (Example: Sync Outlook calendar with Google Calendar)

• Follow the top official guide from Google or your calendar provider.

Tip: In most cases, you’ll:

1. Open your other calendar’s settings.

2. Look for Share, Export, or Link to Google.

3. Paste that link into Google Calendar (under “Add calendar → From URL”).

3. If you use a calendar on your phone (iPhone or Android)

The easiest way is to add your Google account to your phone’s calendar app so both calendars are combined.

On iPhone:

1. Open Settings → Calendar → Accounts → Add Account.

2. Choose Google and log in with your business Google account.

3. Make sure Calendar is toggled ON.
   (Full guide from Google: https://support.google.com/calendar/answer/151674?hl=en)

On Android:

1. Open Settings → Accounts → Add Account.

2. Choose Google and log in with your business Google account.

3. Make sure Sync Calendar is turned ON.
   (Full guide from Google: https://support.google.com/calendar/answer/6261951?hl=en)

Final Check:
Once synced, test it: Add a fake event in your main calendar and see if it appears in Google Calendar. If it does, you’re ready!