Customise SugarCRM for dynamic teams

We are running SugarCRM Professional version 5.0.0a. SugarCRM currently enforces a 1:1 ratio between Accounts (lead and customer records etc) and the Team (group of users) they're associated with. This means that access to an Account record can be restricted to only 1 Team - only users who are a member of that team can access the record. The only alternative is allowing all users to access an Account record. We require the ability to assign access to an Account record to multiple Teams at the same time. We are seeking bids to develop software to provide this functionality. ## Deliverables We expect that the functionality will be implemented as a new sub module called "Teams" within the Account record. We need the sub module code to be "upgrade portable", so that we can upgrade to new versions of SugarCRM without breaking this functionality.