There are several ways to create a pool of calcium. Here is one that is very easy to implement:

Decide how you load each square. Usually $ 1.00 per square for a total pot of $ 100.00.
Decide how you will pay the pot. The most common is to pay something at the end of each quarter. You can decide what percentage of the pot will be paid each time. For example, 25% after the 1st quarter, 25% after the 2nd quarter and so on up to 100% of the pot is paid.
Decide how the winners will be determined. A common way is to use the "last" method in double digits. Basically you use the last digit of the score of each team and find where these figures are superimposed on the grid. If you are not familiar with this method, described in detail in a free ebook is available under the author's box. It will be easier to understand if you can see the network example that comes to the ebook.
Now that decisions have been made, please print a football pool grid (usually a sheet of 8-1/2 x 11 with 100 seats that can be filled with the names). If necessary the free eBook available in the box below author includes an empty swimming pool of calcium (more complete instructions).
"Sell" positions on the grid until all 100 seats are filled with the name of the buyer. Buyers can purchase multiple tickets.
After all the squares are full of names, lot numbers will be filled at the top and bottom of the left side of the grid. The creation of 10 small squares of paper, then write a single number (from zero to 9) each. Fold 10 squares and put in something like a hat draw. Choose someone to draw a number at a time and fill them across the top, from left to right. Bend your back and do the same for the left side, from top to bottom. When finished, the numbers are in random order.
Enjoy the game and the pot to pay as agreed.

Pools are easy to configure and fun for participants. Why not organize one for your next football party? Or spice things work and do an office football pool with your colleagues?