How to add another subscription to existing transactional replication

Hi,

We have four publications (1,2,3,4) on server "A" with Push Subscriptions in place.

Publication 1,2 & 3 are being replicated to Server "B" , while publication 4 is being replicated to "C". 

Now we want to replicate publication 1,2 to server "C" as well. (Meaning there will be 2 subscribers for these pubs simultaneously)

Immediate_sync & allow_anonymous are "True".

While searching for solution I came across article : "https://www.mssqltips.com/sqlservertip/2668/role-of-the-immediate-sync-option-for-sql-server-replication/"

What I could get from article is just add new subscription & that is it. No need to create new snapshot in our scenario.

Note:- I want this new subscription also as Push subscription.

Expert opinions required. Thanks in advance.