When you click Next in the Decision Variables panel or click Constraints in the navigation list, the Constraints panel opens, similar to Figure 26, Constraints Panel with No Data, Simple Entry Mode.
By default, the Constraints panel opens in Simple Entry mode. If you click Add Constraint, you can reference cells with formulas for the left and right sides of the constraint formula and you can select an operator. Alternatively, you can enter a value for the right side or left side. For information about allowable constraint formulas, see Constraint Rules and Syntax.
For an example of using Simple Entry mode, see Specifying Constraints.