There is no direct way. But you have a couple of options:
First and best is to use a local application to add the tags (maybe called also keyword) to the images themselves before upload.
Second, after the upload completes you will be redirected to the images tab where the images will be displayed. (Well, at least some of them depending on how many images you show per page vs how many you uploaded.) There you can use the bulk actions to tag them.