How do I add RSR to Metamask?

As a cryptocurrency enthusiast, I'm often looking for ways to expand my portfolio and utilize different tokens. However, I've recently encountered a challenge in adding RSR to my Metamask wallet. Could you please walk me through the steps? I've already ensured that my Metamask is connected to the correct network and have my private keys securely stored. Now, I'm looking for specific guidance on how to add RSR's token contract address to Metamask and then successfully complete the token addition process. Your expertise in this field would be greatly appreciated as I navigate this process.