You can add new Key Pairs or edit an existing one in your VPC by following these steps:
Go to the Key Pairs tab, select Cloud Account and Region and click on Create Key Pairs.
Give your Key Pair a unique Name.
Either enter a Public Key or upload its Text file.
Next, set a unique Tag for your Target Group and click on Create.
Note: If the public key is not provided, the private key can be downloaded after successful creation.