After preliminary design of a feedback compensator, it may be necessary to fine-tune the characteristics of the compensator. Moreover, in a system that contains multiple compensators, you may wish to modify a particular compensator in isolation.
To modify a compensator block
1. Select the plant transfer function block.
2. Choose Analyze > Select Compensator Block.
3. Point to the compensator block to be modified and click.
4. Click on empty screen.
5. Choose Analyze > Compensator Design.
6. Make the desired changes in the Compensator Design dialog box.