This article is part of the Admin Setup (Step-by-Step) guide.
After choosing the droplet size, check the box for Monitoring in the additional options section:
The monitoring option will allow you to later track your droplet's CPU, RAM, bandwidth, and other resource usage from your DigitalOcean account.
Then, under the SSH keys section, click 'New SSH Key'.
In the dialogue box, paste the public SSH key you had set aside earlier during key creation, name it, and click add:
Enter a hostname of your choosing, then click the green Create button: