If your department have given you guidance as to the structure of your methodology chapter, make sure you adhere to it.
If not, a typical structure might look something like this (but not necessarily including all these elements, and in this order!):
Primary and/or secondary sources?
Quantitative or/and qualitative method(s)?
Reflection on the methods
Limitations and delimitations
Each section is addressed in the tabs of this guide.
Always check with your supervisor or consult the assignment guidelines posted on Blackboard if you are unsure about which sections you will need to include in your dissertation.
The links below also suggest alternative structures: