After opening the guide, click "Add Step"
Click "Image Step"
Click on "Bulk images with text"
Bulk Images with Text feature allows you to upload multiple selected images along with their respective text files in a single go
Select the image files and their respective text files and click "Open"
Your selected image and text files are being uploaded, you can check the swift progress on the topmost bar of panel. For now, click OK
The files have been uploaded and step has been created successfully!