Is there a secret to have multiple orgasms

Enjoy yourself, and talk to your partner as to what like, want and so on.

Parctice practice and more practice

Secret?

A well-positioned clitoris helps.
(But is not everything.)

An absolute LOVE for all things you are doing in bed is also near the top of the list.

And the realization that women, unlike men, are not DONE after orgasm. In fact, a woman's body often gets even more "ready" after the first.
So, relax.

This may sound crazy, but I have NEVER been with a woman who was not capable of more than one orgasm during intimate encounters. The first is often most intense, so don'[t expect each one to knock you out. I can tell you that you may not always want multis. It can sometimes leave you a bit... fatigued.
I may have just been lucky. I would not stress about it. One can be enough :-)
Stress kills a woman's libido.

A lot is in the mind. (which gets better after 25 :-)
For some it's trust.
For some it's a connection.
For some it's just... EZ.

Hope that gives you hope.

U have some answers hawk... practice :)))