Redirect to external url

Sure, you can put whatever you want as the target URL

https://redirection.me/support/redirect-regular-expressions/

You will need to create a regular expression that matches whatever URLs you want to redirect, and then set the target to the URL above.

No, it is not possible to delay a redirect. That is not something that redirects can do.

It helps to put the full details down first.

If each target is unique then you have no other way – how would you be able to do it otherwise? The plugin has no way of knowing what the target is.