You can specify how many minutes a Lesson will be by default via the ‘Default Lesson duration’ number field, found within System > Settings > People & Activity > Activity. This will specify the default setting for a Lesson’s duration whenever you create a Job or Lesson - you can still specify a different duration when creating these.
Set the default for the status a Job will be whenever I create one
The status that a Job will be set to by default whenever you create one can be specified via the ‘Default Job Status’ dropdown menu. Read more about Job statuses here.
Set the default for the permissions an assigned Tutor will have whenever I create a Job
You can specify the default Job permissions (which actions a Tutor will be allowed to perform on a Job) a Tutor will have by default by choosing an option from the ‘Default Job Tutor Permissions’ dropdown menu.