It will be a headache if you do not know to manage your seo workers as nobody will work hard consciously.My suggestions are:to make working plans for them like a day-working-plan,a week-wroking-plan,a month-working-plan etc.
First you need to know what key words you want to be at the top in the google list.For example,if you want zentai,spiderman costumes,catsuit,you need to arrange them to do some work for these key words.You can ask them to write articles around these key words and the best way is wring blogs.