Execute a command at any time or at regular interval.

Use Cron to specify the time: https://www.freeformatter.com/cron-expression-generator-quartz.html

Example configuration:

plugins/Tasker/config.json
{
}

Possible error sources

If the command contains double quotes, they need to be escaped using a backslash:
"command": "tellraw @a [\"\",{\"text\":\"Tellraw\",\"color\":\"dark_green\"},{\"text\":\" example\",\"color\":\"blue\"}]"

Do not mix up the different quote symbols:
Use: "
Do not use: “ ”

Write a comma between every element:
{
}