Hi Nagesh Singh,
1. By default after import of software package it automatically generates installation command lines which contain parameter to perform install/repair/uninstall of package without UI. You can see this command line when you're adding a package in "Managed Delivery" policy ►
2. You can change default install command line type to "Install for all users %package name%" then it will pop-up message just when software will initiate installation on client side ►
3. I've changed default installation command line with no-UI to another install command line which will shows pop-up when client will receive "Managed Delivery" policy
Example how it looks on client side with install command line with UI ►
Thanks,
IP.