Samsung Galaxy S4 User Manual page 285

To mange connected devices:
This feature allows you to provide MAC filtering on your
device. This is similar to a "VIP list" where only device on the
list are allowed access.
1. From the Home screen, tap
(Mobile HotSpot).
2. Tap Mobile HotSpot
3. Tap (Add new device) to add devices to the
allowed for connection list.
4. Enter the Device name and Mac address.
5. Tap OK to save the new device.
(Apps)
Allowed devices.
Connections 279