说明：
1.登录 CareSimple。
2. Select a patient you would like to video call in the Patients tab.
3.点击其姓名旁边的三点图标。
4. Click on the Video Call option.
5. After selecting the Start video call icon, a video call box should open as a modal dialogue and display a black image while waiting for the patient to join.
6.然后，患者的手机会接到一个电话。