If the payoff for a Don’t Pass Odds bet equals the amt. of the Flat bet, then the Odds wager is bridged. The section of your Odds wager that’s equal to the Flat wager is fixed directly beside to the Flat bet. Then, the rest of the Odds wager is put on top "bridging" them. For instance, suppose you lay a 5 dollar Do not Pass wager and the player tosses a point of 8. Understanding the true odds for the eight are six to five (for example., six ways to make a 7, and 5 ways to make an eight), you then lay 6 dollars in Odds with the expectation of acquiring five dollars. In this instance, if you win the $6 Odds bet, you earn $5, which clearly equals the amt. you earn with your 5 dollar Flat bet. Therefore, since your Flat bet and Odds wager aquire the same amt. ($5 each), you bridge your 6 dollars Odds wager by putting a five dollar chip directly next to your $5 Flat wager, and then laying the one dollar chip so it bridges the two 5 dollar chips.
If the payout for a Do not Pass Odds bet does not equal the amount of the Flat wager, then the Odds wager is heeled. This basically means you lay the first chip of your Odds wager chip stack directly next to your Flat wager. Then, position all remaining Odds wager chips on that first chip but to the side and angled on that bottom chip (your Odds wager chip stack is crooked because it’s leaning on the bottom chip).
Confused? That is ok, do not get agitated. The dealer is always ready to help if you forget. After a couple of instances, it all makes sense. It won’t take too much time before you’re a master. If you’re not certain what to do the first instance you try it, basically inform the croupier, "I would like to put some Odds but I do not know if it needs to be bridged or heeled." The dealer asks, "How much do you wish to put?" Suppose you say, "15 dollars to win 10." The dealer will request that you place your chips on the craps table (dealers aren’t allowed to accept anything, in particular chips, directly from a patron), and then he correctly heels or bridges them based on the amt. of your Flat wager. You’ll quickly get the hang of it. Just do not be scared to ask the croupier questions. Her job is just to deal, but also to be friendly and assist the competitors.