If it's simply a question of finding a way for them to put money into the system then you are restricted by what your country allows, however there are a number of local pay merchants now which you may be able to make use of. To become a team leader you need both sales and action points, now one way you can achieve this is to buy enough t-credits and effectively exchange these for versa points via auctions and games, though I would argue this is not a very cost effective path to take.
The idea of being a Team leader is that you are leading a team, and you will find that it's actually easier to qualify as a team leader, when you do that. Not only do you receive action VP when your team members qualify as EA2 or higher, but you should also be receiving some level of commission as well which will help relieve the cash flow issues you are describing.
The best way to help somebody who wants to be a team leader is to help them build a team, how you choose to do that is up to you, you can provide PSAs directly or simply advice on how they can get their own PSAs. You must remember building a business is not something which happens overnight, a certain level of patience is required aw well.
If it's simply a question of finding a way for them to put money into the system then you are restricted by what your country allows, however there are a number of local pay merchants now which you may be able to make use of. To become a team leader you need both sales and action points, now one way you can achieve this is to buy enough t-credits and effectively exchange these for versa points via auctions and games, though I would argue this is not a very cost effective path to take.
