Adding files to your tasks is easy in Taskbox. Its also really helpful if you have any external documentation or resources that you need to attach to a project for any reason.
Navigate to the Taskbox app
Find the project & select the task you would like to attach a file to
Select the slide out view
Navigate to the far right hand tab to select files
Press “Add files” in the blue button underneath the icon
if other files are already in the task, press ‘...” and select add files from this menu
Browse for the file you would like to upload from your internal storage