Pz Joomla 3.8.1 payment gateway installation guide
1.) Login to your Joomla admin panel
2.) Goto Extensions=>Manage=>Install and select "Upload Package File" tab, Browse Payment Gateway zipped file.
3.) Goto Extensions=>plugins and search for "VM-Payment, PZ", place check on the VM-Payment, PZ and click on the "Enable" button.
4.) Goto VirtueMart=>Payment Methods
5.) Click on the "New" button to create Payment Method for "VM-Payment, PZ"
6.) In "Payment Method Information" section fill all the credentials and make sure you have selected "VM - Payment, PZ" in Payment Method drop down list and click to save the information.
7.) In same page navigate to "Configuration" tab and fill the credentials given by Pz Joomla and click to save the configuration