This answer is for general guidance only. It does not constitute advice.
From the nature of the platform its reverse solicitation, as the potential investor has to give in the criteria for his required investments/services and has to run a search for products/services, where he will see the corresponding results. The platform can adapt though according to the given registration or regulatory approval according to each jurisdiction.
The other way would be that he creates under “My Request for Proposals” a new RFP and potentially interested investment service providers – who filled in the corresponding “My RFP Interests” – will receive it in their inbox and can choose to answer accordingly.