You can record and upload content to Kaltura by navigating to video.atu.edu.
In the top-right, click the person icon and then in the dropdown cllick "Login". You will be redirected to a new page where you can use your ATU credentials to log in.
If you already created a video and have it saved on your computer then after logging in, in the top-right click "+ Create" and then upload:
Click to locate the video file you have saved on your computer:
After the video is uploaded you get a screen with some options and finally click save at the bottom: