Process to create linked universe

Hello Experts,

We want to create linked universe in our environment.

1) we wanted to know the process of creating linked universe

2)Also to know if we can create a linked universe from an already existing customized universe.

BO Version : 4.1 SP5

Analytic Version : 8.1.00

So,please help us in solving this issue.

Thanks in advance

--Naveena