Water the soil. This will make it easier to work with the soil.
Use the plugger tool to make holes for the grass plugs in a checkerboard pattern. Measure 12 inches between each plug so they will have enough room to expand and grow.
Place the recommended amount of starter fertilizer in the hole (ask the nursery what they recommend for the fertilizer). Place the plug in the hole and tap down on the plug. Use the soil displaced by the plugger tool if you need a little more soil.
Water the grass plugs after planting. Continue watering once a day for 10 days, after which the plugs will be rooted firmly in the soil. Mow the grass after two weeks.