These simple 5 steps will show you how to do it properly and securely by yourself.
Step 1. Go to your WordPress admin page and log in to your website. If you’re not sure of your password, you can click “Lost Password” to reset it.
Step 2. Now that you’re in the WordPress dashboard, hover over “Users” and click “Add New”
Step 3. Now you should be on the Add New User screen. Enter a username and email address for your new user. Other information such as First name, last name, and website are optional.
Step 4. Click the Send User Notification option. This will ensure the new user will receive an email with their login information. This is a much secure way than manually sending the username and password to your new user.
Also select an option for the new User’s Role. More information on User roles can be found at the bottom of this page or in this WordPress support article.