Это оптимальные на мой взгляд настройки.

Периодическое тестирование 3G модема.

• interval=12h
• policy=ftp,read,write,policy,test,sensitive
• start-time=09:09:09

Удаление гостевых cookies для HotSpot.

• interval=15m
• policy=read,write

Инициализация переменных и SMS.

• policy=read,write,policy,test,sensitive
• start-time=startup

Тестирование доступности каналов.

• interval=3m
• policy=ftp,read,write,policy,test,sensitive

Проверка истечения срока действия сертификата.

• interval=1d
• policy=read,write,policy,test

scheduler.rsc

/system scheduler
add interval=12h name="Periodic modem testing" on-event=test-modem policy=\
    ftp,read,write,policy,test,sensitive start-date=feb/26/2020 start-time=\
    09:09:09
add interval=15m name="Remove trial cookies" on-event=trial-cookies-delete \
    policy=read,write start-date=feb/26/2020 start-time=16:34:39
add name="Initialization variables and SMS" on-event=variables-initialization \
    policy=read,write,policy,test,sensitive start-time=startup
add interval=3m name="Channel availability testing" on-event=failover policy=\
    ftp,read,write,policy,test,sensitive start-date=feb/27/2020 start-time=\
    14:18:21
add interval=1d name="Expiration certificate check" on-event=exp-cert-check \
    policy=read,write,policy,test start-date=mar/18/2020 start-time=09:23:15