That’s the case yeah.
Typically you’ll be put into the respective group chats. Have an eye on it, the group leaders usually confirm each member’s amount ;)
This question is, as usual, entirely dependent on you. Let me explain:
For instance, if you grew up in an environment in which money was generally scarce and people didn’t have the best mindset towards money (the classic ‘money is the root of all evil’), then the best fields for you would likely be Abundance Mindset from the Mind Settings album or the alchemical revision of wealth.
Perhaps you found yourself unable to take action on your money making ideas. In that case you’d likely need the push from Woven worlds millions.
Or there might be fear about money making in general. In that case you might need the Million dollar empire mindset, also from the mind Settings album. To become fearless you could use The Unbreakable.
Generally it helps to have support and guidance. That could be in the form of the above mentioned Kubera’s blessings or wealth mantras meditation.
Or you might not feel very lucky about this topic in general. In that case luck and probability alteration from the bountiful harvest album or the probability wave.
Etc etc.
It’s very multifaceted and you need to do a bit of introspection.
Hence there truly isn’t one best money field. But there is a best money field for your current evolution in terms of wealth and abundance.
Try it out, experiment and have fun ;)
And once you have millions, why not donate to sapien medicine 
I hear they’re pretty good