Hi Hannah Cole-Hall ,

If you are an admin of your org , you can simply create a user in okta and assign the required apps to that particular user.

Follow the below steps to create an user in okta

1. In the Admin Console, go to Directory > People.
2. Click Add Person.
3. Select a user type in the User type list or accept the default. 
4. Complete the necessary fields like firsname, lastname, username ,email

• Password — Select Set by user to allow the user to set their password, or select Set by admin and enter a password.
• Send user activation now - Optional. This check box is available when Set by user is selected as the password option. Select this check box to send a user activation email to the user.

5.Click save

To assign a user :

Select the user profile > click on Assign Applications > Select the apps to be assigned > Save

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