Explanation:

Box 1: is
The dedicated backup file share is \\localhost\Backup
Box 2: does not run
The only thing with a name related to ADATM-SQL11 is the schedule name.
Box 3: 72 hours
4320 minutes equals 72 hours.
Note: @backup_retention_period= ] backup_retention_period
Isthe length of time, in minutes, to retain the log backup file in the backup directory on the primary server. backup_retention_period is int, with no default, and cannot be NULL.
Box 4: 15 minutes.
[ @freq_subday_type = ] freq_subday_type
Specifies the units for freq_subday_interval. freq_subday_typeis int, with a default of 0, and can be one of these values.
Here it is 4, which means minutes.
[ @freq_subday_interval = ] freq_subday_interval
The number of freq_subday_type periods to occur between eachexecution of a job.
freq_subday_intervalis int, with a default of 0. Note: Interval should be longer than 10 seconds. freq_subday_interval is ignored in those cases where freq_subday_type is equal to 1.
Here it is 15.
References: https://docs.microsoft.com/en-us/sql/relational-databases/system-stored- procedures/sp-add-schedule-transact-sql
https://docs.microsoft.com/en-us/sql/relational-databases/system-stored-procedures/sp- add-log-shipping-primary-database-transact-sql