Material design: How do i deal with maps and creating content from options

To explain this as much as possible. I need to give the user an option to create grids on a map. There is different types of grids. So the user should be able to choose between them

The main screen of my app have a toolbar, FAB and map as the main screen. When the user clicks on the FAB. It expands 2 smaller FAB's above of it.

Just like the image linked into this. One of these smaller fabs stands for 'create grid'

So my question is. How should i present these options for the user? Is there preferred way of doing this. Because i want to stand within the material design guidelines as much as possible