Intro with more than 2 rats

[wonderrodent]

I have a general question:
If you have 2 bonded rats and want to intro them to like 4 new rats, do you intro them all at the same time? How do you approach it?

 

[jorats]

I've done lots of group intros. Once it was 7 to 12, another time was 2 + 2 + 1... I may have done it all. lol
I always put the whole group together and I watch for trouble spots, find your stable rat and watch his body language, you'll know from that one how things will go.

I've described one such intro pretty good here:
viewtopic.php?f=4&t=9772&st=0&sk=t&sd=a&hilit=wilson