Opportunity to contract conversion (= 2 deal modules with different names)

Opportunity to contract conversion (= 2 deal modules with different names)

Dear all,

We just started using Zoho CRM and we have decided that the "Lead" module does not fit our type of business, as a lead is converted generally to 1 person (Contact) and 1 company (Account). As we sell products to large conglomerates, we would like to store many contacts with 1 opportunity and sometimes various opportunities for 1 contact, and it got too complicated to use Leads. So, we came up with the following:

Account = Company - we register any company that we come across directly as Account (of course the account can have prospect status, clients status etc.)
Contact = Person - we register any contact person that we come across as Contact, always linked to an Account
Deal = (potential) contract - all potential contracts and closed contracts

Our problem is that we have different teams handling the potential contracts, we call them opportunities, which in Zoho CRM are deals with a 0-90% probability of getting closed. And we have another team taking care of contracts with existing clients, which are deals that have a 100% probability of getting closed. 

Ideally we would like to create two different tabs in Zoho, both with the Zoho CRM deal module behind it. One for the opportunities, one for the closed contracts. How can we do this?

Best,

Daan van Kassel