Hi Vishakha.
I am not sure…
If you have access to the group repo, try copying/fetching the group app via wget (…) into your EGroupware directory and then installing it via setup.
See also:
You should still consider using an EGroupware standard installation on your own server. This is certainly better for EGroupware operation.
I have written about this:
I will update the article in the coming week. I am giving a lecture on this…
Stefan