For a new teacher's classroom arrangements, the classroom seating chart might look typically standard - usually with frontal rows. With a new class, this is probably a good option as a new teacher needs to teach first and talk later. The frontal classroom seating arrangement is probably the best way to go in terms of getting to know a new class and exercising classroom control.
There will naturally come a time however when a teacher will want to opt for group or pair work as one of the primary activities in the lesson plan. If you haven't until now, you might want to plan for a brief 'getting to know you' activity. Experiment a bit. Are the pupils familiar with each other? Who haven't they gotten to know yet? This is a good way to 'test' different classroom arrangements and see how well they appeal to you and your classroom management style.
Try getting the students to talk about themselves (kids love to do this) for about one to two minutes. The couple who has the longest list wins. The easiest type of classroom seating arrangements for executing this type of ice breaker is either turning around the desks to face another pair, or walking around the room trying to find a student who has the same interests. (example: who likes vanilla ice-cream, same number of brothers or sisters, same mode of transportation)
Using classroom procedures is an important part of effective classroom management for classroom arrangements such as pair work or group work.
Just in a getting-to-know-you activity alone, students need to know several classroom procedures. They need to know:
Always plan for at least three to four different classroom procedures for every task that you intend to do in the classroom. This is part of your classroom management plan and all effective classroom managers have them. When you do this well over time, you can teach more and talk less as students will be ingrained and know your procedures so well that you won't need to spend time with explicit classroom instruction on this. However, you will need to remind them every now and then. Don't be surprised if they forget!