What is the current condition of your pool water?
In your first post I see you don't have a CYA reading, so that will be something to definitely do, then you should just go ahead and use your new tf-100 and run all the tests.. (can skip the fas-dpd chlorine test if your not adding any chlorine you know it will be zero, and you can confirm that with your OTO (yellow color matching test)
So to start your slam, you will need to get your CYA reading and use the CYA/chlorine chart to figure out your SLAM level. Use pool math, calculate how much chlorine to add to raise your FC to your newly found SLAM level. The standard beginning time between tests is 1 hour. When you retest your FC after that first hour...use your test results to raise your FC back to SLAM level.
After a couple of hours, and a couple of tests, you will get an idea of how fast your chlorine is being consumed and can adjust time in between tests accordingly. Some pools will consume 7 ppm in just an hour, while others will only consume 2. Just test often enough (as possible) to keep FC levels at or above your slam target for as much time as possible. You will also consume more chlorine during the day from sunlight than you would during night when the sun's down so your time will vary based on that too.