Now I think the best way to cooperate is: the management doesn't own shares, but only gets performance pay.
Capital is allocated according to the proportion of capital contribution. Technology accounts for 20% of the shares: capital accounts for 80% of the shares,150,000 (60,000 for you and 90,000 for the other party), the other party accounts for 48%, and you account for 32%+20%=52%. The operation direction and daily management of the store are decided by the technical and management parties, that is, you. The other party may or may not assist in management. As a manager, you should get a symbolic fixed salary and performance commission.
If the loss is dissolved, you should also bear the risk according to the proportion of shares. That is to say, although you only pay 60 thousand, you have to bear most of the risks, because you are the operator, you have to ensure the investment safety of investors.
The most important thing in partnership investment is to say everything first and trust each other.