Hey Simon,
I just explained that today in one lecture as an update in the course. :)
Let’s say I trade 5k account and use 20 EAs with 0.5 lots. If the account reaches to 6k, I would increase the lots to 0.6…
Same I use for investing. This is what I showed in the Cryptocurrency investment course. If I trade with 5 000 in my account and buy 10 times each 500EUR, I increase to 600EUR, if my account is at 6000. And so it goes…