You can add data lists, calendars, document libraries and dashboards in an application. Document list is used for storing files.
Document list is shown as below:
To create a new folder, click the "+Add" button on the top right operation bar, and select "New Folder":
In the pop-up window, fill in the name of the folder, can click "OK" to create a new folder.
To upload files, click the "+Add" button on the top right operation bar, and select "New file" or "Batch Upload":
New File: Click this menu to add a single file to this document library.
Batch Upload: Click this menu to upload multiple files at once.
Select files from your local disk to upload to this document library. You will see the upload progress window showing at the bottom:
Add new columns for document library
When creating a list, there are several default columns inside created by system. You may need create other columns yourself so the list can meet your requirement.
Lick the icon with three dots on the upper right, select Fields to enter the Fields Management.
On the Fields Management page, click New Field to add new columns.
On the popup window for adding new fields, fill the name and the field type.
View, Edit and Download files
You can click the "More" menu at the last column of each file. From the pop-up menu list, you can change the file name, view the detail info, move a file to a new location, or download the selected file.