[Help] handling 15 accounts and converting to one only

hey guys
I want to make my 15 instagram account followers (which already rich of content)
convert to my main account .
how many ways to do this?
I know that it is possible to tag an account in posts.
but do you know some other methods?

What? Be more specific. You're trying to use a fan page method... or you're trying to move the content from the 15 accounts to the 1 account? If you want help, you have to be willing to actually take the time to explain yourself so people can understand you, not just jot down a few words that are floating in your head.

no I am trying to make child accounts convert ppl to that main account