How to send BTC on Cash App?

How would one go about sending BTC using Cash App? Is there a specific process or set of steps that must be followed? What information or credentials are required to complete the transaction? Are there any fees associated with sending BTC through Cash App? And how does one ensure that the BTC is sent to the correct recipient? It would be helpful to understand the entire process from start to finish, including any potential pitfalls or issues that might arise.