Step 1: Make sure your Start & End Pressure Plate is a "gold_plate"
Step 2: Make sure your Checkpoint Pressure Plate's are "iron_plate" 's
Step 3: Setup your Start & End Pressure Plate's ->
Start: Look at the pressure plate and type /parkour setstart <name> (Replace "<name>" with your Parkour Name)
End: Look at the pressure plate and type /parkour setend <name> (Replace "<name>" with your Parkour Name)
Step 4: Add your Checkpoint's ->
Look at each Pressure Plate for the Checkpoints and type /parkour addcheckpoint <name> (Replace "<name>" with your Parkour Name)
Step 5: Set your "Reset" Location where players should be teleported back when they type /parkour reset
You can set the Location by typing /parkour setreset <name> (Replace "<name>" with your Parkour Name)
Step 6: Type /parkour reload to reload all parkours so your new parkour will be displayed too.

Additional Feature Commands:

1. Type /parkour addendcommand <name#yourcommand>
that will add a specific comamnd that should be executed at the parkour end
Example: /parkour addendcommand myparkour#msg %player% You made it!
So this means that for the Parkour "myparkour" will be a command executed on the end which prints the message "You made it!" to the player.

You can remove Commands by using the same technique but instead of "addendcommand" you use "removeEndCommand"!

2.

Type /parkour toggleFinishRedirect <name> when you wanna send the player back to the start when he finished the parkour.
(Replace "<name>" with your Parkour Name)

Type /parkour toggleLeaveRedirect <name> when you wanna send the player back to the start when he left the parkour with "/parkour leave".
(Replace "<name>" with your Parkour Name)

3. You can use Fallback's so players will be teleported back when they fall down

Type /parkour toggleFallback <name> when you wanna enable the fallback (Replace "<name>" with your Parkour Name)
Note that by only using this command the player will be teleported back directly after falling about 2 blocks so that means only parkour's that go up work!
(You can fix this Problem by using the next command)

Type /parkour setfallback <Y> <name> to set a specific y value at which the player should be teleported back to his last checkpoint
(Replace "<Y>" with your Y Value Example: -15, Replace "<name>" with your Parkour Name)

Type /parkour toggleDeath <name> to toggle the exclusive death fallback that teleports you on respawn to your last checkpoint location.

Type /parkour toggleDeathRespawn <name> to toggle the exclusive automatic respawn that automatically performs the respawn on death, this option requires, that the death fallback is enabled.