Workflow rule - Send for approval

The
send for approval
action enables you to automatically use an
approval template
to send a file when the selected conditions are met.
Once you have selected
Send for approval
as your action, the
Approval template
  fields are displayed:
" "
Select up to 10 columns that contain items relevant to the approval process:
" "
Select an active
approval template
from the drop-down list:
" "
A request for approval is sent to the assigned 'approvers', as defined in the template.
Select
Save
to save your actions.