You can:
Note: If your changes result in a geometric impossibility, or cause problems in subsequent features, you will be warned by the Conflict Solver.
Editing the Copy by the Feature Guide
Right-click on the Copy name in the Feature Tree, or select one of the copied features and then right-click. In the popup menu that appears, select Edit Feature.
The Feature Guide will appear, automatically open to the last required step. You now return to the same situation in which you created the Copy.
Make modifications in the current step, and / or click the icons for
other steps to modify. Press OK
or Apply 
in the Feature Guide to complete the function.
If you want to modify only the numerical values, such as delta, counters, or theta, double-click on the Copy name in the Feature Tree or double-click on one of the copied features.
The numerical values are displayed. Press exit to leave edit mode, or click a value to open the Dimension Dialog. In this dialog you can enter another value, or enter an equation involving parametric dependency.
When the parameters are updated, click 
to update
the copy, or you can update it later. (If you do not update now, all updates
will be done automatically the next time you create or edit any feature
or object.) Exit to
leave edit mode.
See also:
to enter a 
