Once you have finish the previous Step 3 you will see a preview of your transaction.
Hit "APPROVE" once you have gone through the information.
Once you hit "APPROVE" Metamask will popup for you to confirm the transaction.
Once the transaction is done on the Ethereum blockchain the process will be done.
Step 4 - 2 Final Touch
After the Step 4 - 1 you will send 32 ETH to the contract and the node will be configured. Once these steps are done your dashboard and node will be up and running.
Congratulation 🎊you have finished setting up your validator nodes. Next sit back and enjoy the power of Proof of Stake.