Replace Add confirmation button in SAPCRMSM

Hi,

I need to replace the action in the default Add confirmation button in SAPCRMSM. Once clicks on the Add confirmation button, Confirmation items screen should appear instead of default Add confirmation screen. I am using Agentry v70.5.1.10 and deploying to SMP 3.0 for Windows platform (1366*768).

Whenever I change the Add confirmation button to get the desired output, its disabled. I am very new to this platform.

Can anyone help me please?

The below screen should appear,

-Basil Jose