Distributing the content directly to Secondary Site

We have a particular application that is being used at a only one of our sites with has Secondary site.(SS1)

Now my question is when i distribute the content do i always first need to distribute it to the Primary Site (PS1)or can i skip distributing it to Primary and directly distribute to secondary site SS1.

We have 1 Primary Site & 4 Secondary Sites along with few additional  DPs.