Work out where you want your fence to go. Mark the lines by pushing wooden stakes into the ground and tying string from stake to stake. Take the time to measure and square everything off so it’s in line with your fences and/or adjacent structures.
Lay the posts down where you want them standing. The closer they are, the stronger the chicken wire fencing will be. 2 metres is probably about as far apart as you want them. If you’re having a gate, make sure two posts are set out at the width of the gate plus a little so it can move on the hinges.
Dig out your post holes. There’s a great calculator that will help you work out how much to dig out and the amount of concrete needed.