use of delay both in single and multiple chat bubbles

Hi,
I'm fairly new here. I've tried to use the delay function, but I can't really make it work properly. I have two cases.

I try to set up a bot message so the response is delayed a bit. I click the "delayed response" option and it inserts "::next-XXXX::". I have tried to exchange the "xxxx" numbers but the whole "code" just shows up in the bot message which is being displayed instantly after the user response.
I wanted the bot to post two messages after each other with a bit of delay before the first one and inbetween them. I tried putting in the "::next-XXXX::" between the parts I wanted to be shown in different bubbles, but it doesn't work either.

I hope you can assist here.