no second password

Hello y'all :)

I'm new to Elgg and looking for a way to skip the password-login;

this is for a closed group in a company, and they need to login to the member area; I want to avoid they have to log in again to join the Elgg; is it possible that the 1st login will automatically be applied as a login for the Elgg login (the second login)?


It would be great to get help here, thanks so much in advance!!!