I wouldn't really going to recommend taking funds from someone just to invest in Cryptocurrency or Bitcoin, I mean we already know the how risky it is on be on cryptocurrency so we should be extra careful especially if you are going to take funds from someone, because if you take investment money from someone they might say that it might win or lose, but they surely going to expect a return from you which is not going to end up well for sure because market is not predictable. Even though we could say that market price is going to be a profit in the coming months it wasn't going to be a guaranteed thing at all.
it is a very delicate situation and if thing get out of hand given explanation will not just make sense because the person will be like this is not what you told me when you collected money from me, and first of all we know what bitcoin and other crypto currencies are capable of, you can make profit and the same time you can lose money. and if you end up taking money and things did not go as plan. then what explanation do you give that will justify you trying to help. even if they know what is at stake there human nature will still expect nothing but profit. and lets assume that the market goes down you need to make a good explanation to convince them that the market will bounce back over time. and its true you can expect a lot from the market but your expectations should not be that high because if it is to high you night end up depressed. it is better to use your own money and anyone you are involving should be told the plain truth, to avoid getting blamed at the end of the day. because people that tell people about bitcoin will always want to sweet talk, and investing comes with a lot of disappointment which is the risk behind it.
What I would advice in this kind of situation, is never to take any money from anyone because it just going to be a huge problem in the end, what you should say to someone who wants to invest is to actually invest it by himself, so he or she needed to do the hard work, needed to do the research on there own because it involved a huge risk, so that if they lose that money it is going to be their fault. Just don't encourage them to invest at all instead discourage them telling them all of the disadvantages and worst things that could happen, after that if they still want to invest after hearing most of it, then let them process and probably guide them, or else guide him to this forum where he/she might learn a lot.
A very huge problem we know how hard it has become to make money and money was collected just for to invest it in bitcoin and bitcoin is something that any little thing can change the market. that is the nature of bitcoin and if it was a situation that the person is interested in bitcoin but when you find your self in that situation you ask them to learn and they should in charge of there own money managing it them self. at least if anything happens they will blame there self.
And when they do it by there self they will know that its not easy to actually know about bitcoin, and when you lose money they will feel you were not extra care but when they lose money they will look for ways to justify there own intention. and that is why it best you allow them trade or hold their assets their self then they will know exactly what it takes. And they can be calling for advice and its not bad but after the advice they can make their own choice.