As in the title it is true that you don’t have to copy paste the gallery shrotcode after it is generated as other plugins does.
You can initially keep shortcode as
in any number of pages & post and images/post can be added slowly by going into the respective page.
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Initially this shortcode will have a form with one title and one file upload field with submit button as on the picture below.
For example: You wanted to add category to the form so that it will Title,category,file selection & submit button. All you have to do is use