Methods, apparatuses and computer program products for supporting of decisions regarding activities of an organisation are disclosed. At least one business objective for activities of the organisation is determined (110) as a control parameter for at least one control tree. At least one constraint affecting the control parameter for at least one constraint tree is determined (112). In a database of computer system, at least one control tree and at least one constraint tree are developed (114) related to the control tree having control and constraint parameters. Relationships amongst constraints and the relationship between the control parameter and constraints are identified (116), and information about relationships is stored (116) in the database. Business activities are evaluated (118) using the control parameter dependent upon identified relationships and constraints. The evaluation result is compared (120) with a predefined value of control parameter for the business objective. A decision is delivered (122) when the business objective is satisfied.