The parameters values can be edited for the both algorithm and constraint elements.

When you select an element on the Scene, it’s description and parameters appear in the Property Editor.

     <img src="/wiki/download/attachments/4686220/Managing of Elements Parameters.png"/>

There are some common parameters:

Other parameters can be found in the Parameters area. Depending on the parameter in question, the value is selected either from a drop-down list or a spinbox, etc.