Encrypting problems

Hi everyone. I really appreciate all the efforts you re doing for making encryption easier to understand.

However, for being a beginner, I m confronted to a problem.

In the examples given in the manuals, encryption is made using the public key of the receiver.

But if I want to send an encrypted message to various people, I should use my private key to encrypt my message, and the users should use MY public key to decrypt it.

However, when I encrypt a message with winpt, i can t make winpt use my Private key to encrypt my message.

Can someone tell me how to do this ?