VAT Setup - EU Reverse Charge

[Mrnprs]

Hello Team, I would like to ask:

1. How to setup a VAT Code for the EU Reverse Charge? The principle will be 19% input vat and 19% output vat, net effect zero. On the invoice the VAT-EU Reverse charge should appear as zero whereas on the tax accounts I should have the amounts.
2. How to change the wording on Customer creation: 'GSTIN No.' to VAT number?