1)

Click the floating plus icon and select "Image Step"

2)

Click on "Upload Image"

3)

Enter a description

And click on "Save"

4)

Click on "Bulk Images"

Click on "Bulk Images"

5)

Bulk Image feature allows you to upload multiple files in one go

Select them and click "Open"

6)

The images you've selected are being uploaded, you can see the progress in the topmost bar

Click "Ok"

7)

Bulk images are created as steps! 

8)

Click on "Bulk Images with text"

9)

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"

10)

The images and text files are being uploaded, you can see the progress in the topmost bar. Click "OK" for now

11)

The files have been uploaded and the step has been created successfully