If I had my husband as a assistance what would he need to do

Ofsted produce a guide, "Childminders using assistants". Until they update it, you'll need to read it inconjunction with the revised EYFS, as there are a few significant changes and clarifications coming in September.

See http://www.ofsted.gov.uk/resources/factsheet-childcare-childminders-using-assistants (http://http://www.ofsted.gov.uk/resources/factsheet-childcare-childminders-using-assistants)