How to use categories & order_by

I would like to change how we display the members in our organization to the public.
Our organization has 2 types of memberships which we call “Structural Removers” & “Non-Structural Removers”. In our case, everyone who is a “structural remover” is also a “non-structural remover”.
Iow, of all of the types of jobs that can be done, structural removers do everything while the non-structural people only do a subset of the job types.

Currently in Connections, we have 2 categories for this division. Category 1 is “non-structural”; category 2 is “structural” – where category 1 is the parent of category 2.

On the page given above we are currently listing ALL members (category 1) using this code:

[connections enable_pagination=false order_by='id|RANDOM' show_image=false image=none image_fallback=none image_single_fallback=none image_single=none enable_search=false enable_category_select=false str_select_all='' enable_map=TRUE card_height=200 card_width=300 enable_category_by_root_parent=FALSE show_addresses=TRUE str_seperator='' str_image='' str_contact='' str_home_addr=''  str_school_addr='' str_work_addr=''  str_other_addr='' str_home_phone='' str_home_fax='' str_cell_phone='' str_work_phone='' str_work_fax='' str_personal_email='' str_work_email='']

But what I would really like to do is list the members in 2 phases
List the category 2 people (structural removers) at the top, followed by the people who are not category 2 (people who are restricted to doing non-structural).

I am willing to redo the categories if needed

The page I need help with: [log in to see the link]