Locate the ruleset (Where is my ruleset?) and double-click the ruleset node.
In the Outline view, choose a rule node.
In the Rule Editor, under Then section, choose the Add icon.
In the drop down menu that appears, expand the Evaluate Decision Table node and choose the Decision Table name, you want to use in the rule.
Note
You can dynamically invoke a Decision Table by choosing the Variable Definition instead of the Decision Table name.
More Information: Dynamic Invocation of Decision Tables
Save the changes.
During the execution of the rule the Decision Table gets evaluated.