Why does enterprise WeChat display its own calendar when others open the schedule?

Employees can enter the WeChat chat interface of the mobile phone company, and then they will see a calendar icon. Click to enter the schedule setting interface, and then click New Schedule on the upper right to edit and set the schedule according to your work schedule and plan. Click Save after editing to complete the schedule setting. Of course, you don't need to fill in all the options when setting up schedule editing, you just need to fill in some contents.