sherlock62 wrote:
I recommend that you forget using the Windows 10 Calendar app and that you install the FREE app "One Calendar" by One Spark (works with Google Calendar which is what I recommend) that your can easily find in the app store.
I agree with forgetting the Windows 10 calendar but don't understand the other recommendation. Google Calendar doesn't need any other app, it works across all devices and it's free.
Google calendars can be shared if husband and wife use different Google accounts (gmail account is key to all Google apps).