What is the most logical next event?

How to hang a gate
Dig a hole at least 3 feet (or 1 meter) deep using a post hole digger.
Place one of the posts into its hole and while holding it as level as you can, pour dry concrete into the hole until it is half filled.
Pour in roughly 5 inches (or 12. 7 centimeters) of water and let the mix soak for a minute or two.
Fill the hole to about 5 inches (or 12. 7 centimeters) from the top with more of the dry mix, adding another 5 inches (or 12.