On the app, click on the "Sound" icon at the lower left part of the tool and select "Microphone." Then, open your voicemail service on your phone and play the voice message. The online audio recorder then clicks the "Record" button on the audio recorder while the voicemail is playing. If you are recording using an external mic, make sure that your phone is on the loudspeaker and pointed at the mic.
However, I would not leave a voicemail until I had called that hiring authority many times. Only after I conclude that it is unlikely that I'll ever catch this person, would I leave a voicemail. The script for leaving a voicemail is not much different from the script for a live conversation: “Mr./Ms. Smith. My name is Sally Jones. My phone number is . I'm a recent college with a degree in _________. I'm offering hard work, determination, passion and commitment to an excellent employer like you. I would like a chance to meet with you. Again, this is Sally Jones and my phone number is . Please call me; I'd like to meet with you at your earliest convenience."

Use call answering rules to determine what happens when a caller reaches your voice mail. For example, if you have automatic replies turned on, then you could set up your rule to transfer the caller to a different number. If you have multiple rules, you can specify the order in which they are applied.
Here’s a simple clinician voicemail script if you want to keep your message to the point. Hello. You’ve reached Highland Family Counseling Services. We are currently unable to take your call, so please state your name, phone number, and a detailed message after the beep. We will return all calls within two business days.