What I do when Making/ editing my own clicks I use the Loopcommunity Cue pack with my DAW. After setting my BPM I drag the "Accent" on the 1 mark of my time line and then the other click (the non accent) on the (depending if its 4/4, 3/4 or 6/8) adjesent marks on my timeline. After that I then loop them through the rest of the song.
I'll Show an example that's even simple enough to use garage band.
I hope that makes sense.