In order to request the location of a single member in a Private Group on iOS device, complete the following steps:
1. From the group map of your private group, tap on the group icon to navigate to your private group's details and from here, tap on "Request Location" for the user of your choice.
2. You will then see a notification that the Request Location has been sent.
3. The user will then be able to choose whether to decide to share their location through Glympse.