I don’t know NCE, but the plugs and jack’s for my Lenz system are common electronics parts. I bought a bunch and just ran a control bus around the layout, putting a jack every 4-6 feet.
The NCE PowerCab is a hand held unit comprising a cab, command station and booster provding track power. Disconnecting from a panel removes power to the tracks
Most economical way to add throttles would be with an NCE USB adapter. That would also require a computer running JMRI (free) and a USB cable. Add to that a local WIFI network and a phone or tablet with the appropriate throttle software installed (also free).
The powercab is the command station, so he can’t just unplug and move it.
The Cab06P is around $85, but you still need the UTP panel for $24
Trainworld also has a Cab05 which I hadn’t heard of. It looks like the bottom half of the Powercab an is around $71. The lack of a display looks like a big drawback to me.
I hav the 06 cab and can have two operators. when I expand I plan to have a second UTP location.
There is an alternative, if you add an SB5 booster you can move the handheld unit, as the booster takes over. However, I still plan to have a second port as well as a booster so I can run more than three locos, if I have a second operator. Second UTP keeps the aisles free from wires.
NCE did have Cab 04 & 05’s which have been taken over by Cab 06. The 04 & 05’s are mainly for yard use - I have all versions of 04 & 05’s plus 3 Power Pro cabs used mainly for main line trains.
I looked at the Cab05 and it is quite different from the Powercab. I’ve not decided which to get. The Cab05 is one option since the other person is only working the yard.
If you prefer a knob, the old Cab04 or the current Cab06 are the way to go. Main difference between the 04 and 06 is the 06 has an LED display to show the address of the loco you are controlling.
They are quite a bit different from the PowerCab/proCab, because they are designed to simply run a train, not do programming. Hence no big LCD display and fewer buttons.