Task kind, quantity and positions are specific attributes, designated for the tasks copy flow.
Kind indicates the type of action expected to complete the task (write an article, upload photos . . .) - i.e. the expected task products. It is single category in the new category set 'TaskKinds':
Quantity describes the required length/number/quantity of the task products ('500 words', '3 minutes', '800 words, 2 images' . . .). It is a single-line string of max. 80 characters.
Positions are the expected position(s) of the task product: page(s), section(s), Web sites etc. It is a list of keywords from the new keywords set 'TaskPositions'.
The above settings are in your schema (schema changes are in Tark4Include.xsd) and also the following files:
Config\Data\GN4_Tark4_Common\keywordSet_TaskPositions.xml
Config\Data\GN4_Tark4_Common\TaskKinds.xml
Config\Global\BasePortalConfig.xml
Config\Global\GN4_Tark4_Common\PortalConfig.xml
Config\Global\GN4_Tark4_Common\wf_NewTask.xml
Config\Strings\ArchiveStrings.xml