The metadata fields available for editing are completely dependant on the configuration of Pixometry Imagin for your organisation, and may be different from what is in the screenshot below. If you edit metadata, the fields with the red background are mandatory, and you cannot save edits without filling out those fields. Some fields may have a drop down menu with fixed options. See screenshot below. To edit metadata, you can double click a thumbnail to open the edit screen. There are also other options to get there