Download the appropriate Geth (Go Ethereum) version from the following link: https://geth.ethereum.org/downloads/

Unzip the folder and Open Git bash / Terminal inside the folder.

./puppeth

Network_name

Configure a new genesis block

Choose Clique (Proof of Authority) algorithm

Copy both addresses from step 1 and paste them into the list of account to seal.

Paste the addresses again into the accounts to pre-fund

Type "no" for pre-funding compiler

Add a chain ID. ( This can be any number, for example : 55 )

Complete the rest of the prompts, and when you are back at the main menu, choose the "Manage existing genesis" option.

Export genesis configurations. This will fail to create two of the files, but you only need 'network_name.json'. (Check to see if the nodes are inside the folder)

Use the MyCrypto GUI wallet to connect to the node with the exposed RPC port.

You will need to use a custom network, and include the chain ID, and use ETH as the currency.

Import the keystore file from the node1/keystore directory into MyCrypto. This will import the private key.

Send a transaction from the node1 account to the node2 account. ( Do this buy going to the dropdown menu at the top and clicking "Send Ether Tokens", then paste the address of node2 )