In the Constraints panel you can add logical expressions and combinations of such. All results from logical tools can be used to define constraints.

Add new constraints by pressing New and choosing a logical tool.

Logic Tool Selector

In our example both the result of the Syringe present and Distance OK tools have to be true at the same time.

The tool constraints are defined in the Toolbox. You can make extensive and complicated expressions by combining results of logical tools and states.