your code could loop and every 60 seconds check for some event. Some examples are:
File is created on a network drive
Database table gets a specific value
Space used on computer exceeds some specified value
Some time is passed and you want computer to perform some task
Every 15 seconds chart the trend of some value, ex. size of a log file
Send an email if a file wasn't received by a specific time
Prompt user to enter what they worked on for the last 15 minutes
The VBA code looks something like:
Do
if Filesize("c:\alogfile.txt") > 1,000,000,000 then
email "Admin@Listi.net","Your file as exceeded 1 Gigabyte"
exit do
end if