How do I add covalent to MetaMask?

Could you please elaborate on the process of adding Covalent to MetaMask? I'm interested in understanding the steps required to integrate this tool, specifically the interface where I would find the option to add it, any necessary permissions or configurations that need to be adjusted, and if there are any prerequisites or additional software that I should be aware of. Additionally, are there any potential challenges or considerations that I should keep in mind while adding Covalent to MetaMask? Thank you for your guidance.