Walk to the first post where the wire is unsecured. Hold the wire up to the area of the post where you want to attach it. Place a metal fence fork clip behind the post with its two hooks extending out on your side of the fence. Slip the hooks of the clip over the wire.
Hold the fence fork with the tines pointing down and toward you. Insert the tines behind the wire and through the hooks of the clip.
Pull the handle of the fence fork all the way down until it is parallel to the fence. Remove the fence fork from the hooks of the clip.
Repeat the process to attach the wire to each remaining fence post in the same manner.