If I add an event in my phone to my calendar it doesnt show up in my calendar in outlook.Since I upgraded the i Phone to i OS 10.2.1, the calendar is not upating.For the Proxy Server issue, I have reapplied the Group Policy to all users.Somehow, my GP has been reset too, and I don't know why.In order to view someone else's calendar, that person must share his/her calendar with you as well.You can select the way that your calendar information is displayed by clicking Calendar in the Navigation Pane.Similarly, subscriptions are one-way only, meaning the feed is from Full Slate to the other calendar.To setup an inbound feed to Full Slate, subscribe to an external calendar.
The thing is, the user can see anyone free/busy through the OWA. Finally, I found the answer for my problem with Free/Busy Scheduling in Outlook 2010 Calendar.
This is especially useful if you want to be able to see your schedule in the native calendar app on an i Phone/i Pad or a device running Android.
Here’s how: Note that calendar subscriptions are read-only, meaning you will be able to view appointments but not make changes in the other program.
Please be aware that anytime two disparate programs are connected, it's not possible to guarantee 100% accuracy.
As a result, we recommend not fully relying on a sync or subscription to operate your business.