Under your profile, go to Edit Profile > Payments

I already have Payoneer:

Link your Payoneer account by clicking I already have a Payoneer account and follow the instructions to link your account.

I don’t have Payoneer:

If you do not have a Payoneer account, sign up by clicking on I don’t have a Payoneer account yet and follow the instructions to create a new account.

If you have additional questions regarding Payoneer, please contact them:

Here's a short video that will show you how you can navigate to the Payments settings to set up your Payoneer account: