English Expression: Check/tick all the boxes
Check all the boxes is an expression which means to meet all of the requirements necessary to be successful.
There are many requirements that you have to meet to be successful, Think of these requirements written in list form.
If you are interviewing for a new job, trying to open a new company or even looking for a spouse you need to meet all of the requirements on the list.
As you go down the list, one by one you check all the boxes next to the requirement you have met until they are all completed.
If you can tick all the boxes, congratulations, you will most likely be successful in your endeavour.