This adapter from Delock can be plugged into an Apple power supply, such as that of the MacBook Pro, and expands the power supply to four charging ports. This allows various USB devices to be charged simultaneously.

With the USB Type-C connector and the locks on the sides, the adapter has a secure fit on the power supply.

Once connected to the power supply, four USB charging ports are available: one USB-C socket with PD functionality, one Quick Charge 3.0 USB Type-A socket, and two USB Type-A BC1.2 sockets.

Specifications:

Connections:
1 x USB Type-C plug, 1 x USB Type-C Power Delivery socket, 1 x USB Type-A socket QC 3.0, 2 x USB Type-A socket - Battery Charging Specification BC1.2
USB Power Delivery (PD) 3.0

Output:
USB Type-C Power Delivery (PD): 5 V / 3 A, 9 V / 3 A, 12 V / 3 A, 15 V / 3 A, 20 V / 2.25 A
USB Type-A Qualcomm Quick Charge 3.0: 3.6 ~ 6.5 V / 3 A, 6.5 ~ 9 V / 2 A, 9 V ~ 12 V / 1.5 A
USB Type-A socket with BC1.2 5 V / 2.4 A

Overload protection
Overcurrent protection
Overheating protection
Short circuit protection
1 x LED indicator
Color: white
Dimensions (LxWxH): approx. 74 x 59 x 34 mm

System requirements:

Apple 61, 87, or 96 watt power supply with USB-C socket.