How can I charge my MacBook Pro and not block one thunderbolt 3 port for other uses? I record high school bands when they go to contest using Sound Studio.  Each of three judges is also making digital recordings on hand held recorders.

While I am recording one band through a mixer onto my Macbook using a USB port, I download the judges comments from the previous band from the hand held recorders through another USB port. I then quickly edit all four files and then write them onto a thumb drive using a USB port.

Here is the problem. I need to upgrade my current laptop (it is four years old) and turn it into my backup.  The current crop of laptops only have two thunderbolt  ports.  How do I do this work while keeping the laptop charged?
Apple makes a USB-C Digital AV Multiport Adapter which you can use to connect a USB-A thumb-drive and power the computer simultaneously. Other manufacturers make similar devices, but Apple's offering is well-made.



All sorts of hubs exist so you can pick your price point, support, features and decide if a larger, more rugged device is less likely to disconnect while the event is happening.