Paid sub expiration reminder emails auto-sent by vB

[محروم.كوم]

Admin CP > Scheduled Tasks > subscriptions
"Once per day, this script removes expired paid subscriptions as well as sends out reminders about soon to expire subscriptions."

I would like to get in control of how soon before expiration the email is sent, and what is in the text. How do I do this in the Admin CP? Did surf Languages & Phrases and can't find a phrase related to paid subs.

Admin CP > Users > Send email to users
does not appear to have options for paid sub dates (expiration or start.) __DEFINE_LIKE_SHARE__