Victron inverter monitoring

It seems because it is.
Actually, there are different possible ways to install it, and for reasons irrelevant in this contest and a bit long to explain, I preferred to keep the whole onboard AC circuit directly connected to shore power, so I'm NOT using the Multiplus as an UPS.
But in the typical installation, you connect the shore power to the "AC IN" of the Multiplus, and from there you have two "AC OUT" lines:

OUT #2 is simply a passthrough from AC IN, and it's meant for all AC devices whose current absorption would be too much for the batteries+inverter (like airco, cooktop, oven, washing machine, whatever).
In practice, the Multiplus does nothing at all for this line, which works as if connected directly to shore power.

OUT #1 is instead an AC line which is fed either by shore power (when available), or by the inverter (as soon as the Multiplus senses that shore power is missing).
And I gave this functionality a try, leaving the TV, the wifi router, the Sonos system and some other stuff turned on, and tripping manually the shore power breaker.
The inverter immediately took over, and none of the AC devices that were running missed a beat.
Truly impressive.

I'm not familiar with Magnum units, but I guess in your comparison you are referring to the Victron DMC remote in your post #13, which is rather obsolete by now. The current Victron software tools show you much more than just V and A, as per screenshots in my post #6.
And all of that also via internet, whenever you aren't onboard!

I just checked how I configured the max DC charge I previously mentioned.
And I did that with a program that is possibly the less user-friendly of all Victron tools, which in fact according to their recommendation is only meant for trained personnel. Which I'm not - but both myself and the unit are still alive, so obviously it's not really rocket science...
Anyhow, to follow up also on @MBevins question, this so-called "VEconfigure" software gives the highest degree of customization, and the screenshot I'm attaching below, which is just one of its several "pages", gives you an idea of that.
But in most cases, you don't need to ever use this tool.

Back to the point, if you wish to limit the DC charge current regardless of how much AC is available (and/or limited by the knob on the DMC panel), this is the configuration screen allowing you to do exactly that, among several other parameters. As I previously mentioned, my unit is rated for a max bulk DC charge of 70A, but I chose to use only half of that, as per the parameter that I highlighted in a red circle.