The process to enable Learning Flow are as follows:
Once you have enabled Learning Flow, you will see that ENABLE LEARNING FLOW button is now replaced with other options and the week / topic header will appear.
There is no right or wrong answer in this. It all depends on the module’s requirement.
When you choose Free-Format / by topic, you can still specify the period / duration in which that topic will be taught / learned.
When you choose NUS Academic calendar format, weeks such as recess, reading week, examination week will be indicated in the header. All your scheduled events such as lecture, exams, will also be automatically added into the weeks. These events will not be able to remove.
If you are unsure which format to use, the recommendation is to choose NUS Academic year since this will likely feel more familiar to you.