$ sudo apt-get update
$ sudo apt-get install kgendesignerplugin 

kgendesignerplugin is installed in your system.

Make ensure the kgendesignerplugin package were installed using the commands given below,

$ sudo dpkg-query -l | grep kgendesignerplugin *

You will get with kgendesignerplugin package name, version, architecture and description in a table

kgendesignerplugin package basic information: