Hi guys I mean the opposite.
If you want to start your ICO.
How do you get the website registration portal to accept coins from people who want to buy into the ICO?
Do you mean how to accept payments from Investor when you start your own ICO business?
If so, then I think they use payment gateways like: gourl.io
And those third party payment gateways, handles all the payment on behalf of the ICO business owner.