You can use the Streamio Upload Form if you want anyone (i.e., people who don’t have login details to your Streamio account) to be able to upload videos to your Streamio account.
Under Account Settings, you will find the section for Upload Forms. Here, you can easily create a new Upload Form by pressing the button with the same name. Then enter a title and optional tag that all videos uploaded with this form will automatically receive. Then go to the relevant form and you will find the iframe code for embedding it on your website and a shortlink leading directly to the form.
As anyone can upload videos to your Streamio account, it is good to consider where to publish such an upload form. Especially if you use tags that may be linked to a play channel that automatically publishes any video with this tag.