Play 5v5. If your numbers are short, decrease size of field to 30x20 and play 4v4.
Cones for goals are 5yds wide and use goalkeepers.
None. Just sit back and let them play. Help remind them of the rules for their age group: offside, thrown-ins, goalkicks and corners. Place a few cones down to divide the field into thirds to mark the ‘Build-out Line,’ and show them what they need to do when the GK has the ball.