The simplest way is to see if the co-founders agree to a business plan, buy-out agreements, founders agreements and establishing a Board of Directors. Also establish in the business plan each founder's role and agree on an exit plan. Make sure Marketing drives the business and the founders are willing to pivot as needed. Founders you start with do not have to be the co-owners you exit with. Just make sure to protect the venture from co-founder caused disruptions by having agreements in place. Over time as the business pivots , grows and becomes profitable, co-founders interests and priorities often change. the business must survive and grow as an independent entity. Treat it like a marriage with prenups. No co-founder/co-owner should be considered indispensable to the business. Other option is for the initial founder to hold on to the voting shares and provide non-voting shares to the other co-founders as you bring them on board. That is what I did and this arrangement worked out well.