1st Step
If you already have an account in PayU, access your account in PayU and obtain the Key and Code of the Store in PayU
or
Create your PayU account through the link: https://www.payu.com.br/
2nd Step
After obtaining the Key and Store Code in PayU
Access the control panel of your store
After login click Modules >> Payment >> Select PayU >> Click the INSTALL / EDIT button
Fill in the fields and click the UPDATE button