Hi, If you follow this link it will take you to a load of info about the resetting. There is also a diagram on there somewhere too. There are 16 slots in it but they are small. Number 1 starts at the bottom right corner then goes up from right to left.
16 15 14 13 12 11 10 9
8 7 6 5 4 3 2 1
Thats how the numbers are. some numbers including 4 and 8 will have small silver inserts in them so they are not too bad to identify.
If you read throught he thread you will see how long to make the connection depending on what service was due.