Add attachments
There are 2 ways to add an attachment to a task.
Open the details of a task, and in the right menu click on the symbol of a folder. Here you can create folders and upload attachments that will then be linked to the assignment.
Go to the File explorer either on My profile, My company or Project and navigate to Tasks. Then see the subfolder that belongs to the task were you can create folders and upload files that are linked to the task.