Determine timing
Once you know how many questions that you will attempt, determine how much time you will need to spend per question, game, or passage to get those correct. Some test-takers will average out the time per question, although this likely would drive most people crazy. Others will determine the time per game, reading passage, and every five logical reasoning questions. Practice will help you determine what works best for you. Practice will also help you determine how much time you should spend on different types of games, passages, and questions.
Distinguish between difficult questions and time-consuming questions
Recognize which questions are difficult for you regardless of how much time you have, and questions that do not tax your brain so much, but take time, and are thus frustrating. For example, suppose that you can do weaken argument questions in about two minutes each, but usually get them wrong, yet, you can do parallel reasoning questions in about four minutes each, but usually get them correct. Suppose you are at the end of a logical reasoning section with four minutes left and have your choice of doing two weaken questions, or one parallel reasoning question. Clearly, your best option is to go for the parallel reasoning question.
Use a watch
Use a watch with a basic timer function to help keep track of time. You can pick up a basic digital watch with a timer for about $10 to $15, and then pop off the back and snip the wire that leads to the beeping device. You can get also get a vibration alert watch, which you could set to go off with five minutes left in a section.