Answer:
( 1 ) Select the gear icon
( 5) Select save
Explanation:
we have given that client ask turn on warning in Quick Books Online company so
we do 1st step that is
the first is step we we select the gear icon
after that select Account and Settings
and we go for advance tab
after that we perform the action that is Other preferences section
and select the option there to warn when we use duplicate check number
then we select the save button for save over above performance
so here fill up are first ( 1 ) Select the gear icon and last ( 5) Select save