I noticed that this problem is facing a lot of new entrepreneurs , including myself to be honest. when it comes to convincing ( that be Co-founders, employees and even Angel investors ) it is always hard, because everyone is aware of the high risk, so most individuals will avoid "wasting" their time without getting a high incentive like a monthly salary or getting paid on each milestone or a working prototype.
so my questions is to all the experienced entrepreneurs; what, when and how much should you offer on each stage of the start-up ? and based on what ?
example : if someone got a great idea for Jewelry product but he can't offer money. to start he first needs a designer, then an Angel investor to start producing his product...
It requires that you demonstrate value to the other person. You can co-opt others by doing a thing that they can't, but want to. Ideas don't count though.
Just Present and sell your idea to interested investors i think is a first best approach. other way you can think big but start small the result will attract others to join you. you can sell your idea verbally or formally using Business plan or concept note. the out put will convince them to join you.