Every club within Soccer Manager has an 課長補佐 and their role is to work alongside and help you in the day-to-day management of the club.
Amongst the tasks your 課長補佐 carries out are:
Your 課長補佐 will also be available to you in a number of other ways than those listed above, as they will also offer advice and help on the daily management of your club via the チュートリアル.