All Things Timers

I am looking for two settings/timers:

1. A timer in the breakout rooms that lets people know how long they have before the room closes. Where can I find this and how do I set it?

2. A timer that appears on my screen, as host. the times will vary from 30 seconds to 40 minutes, and needs to be set on demand, not in advance. 

I have two options in my app search in Zoom: 

I used one, it was super annoying and I disabled it (I saw that others felt the same way)

I used another one, and all was fine, then it suddenly wanted a lot of control over my meeting. 

I...just...want...a...simple...countdown....timer!

All help appreciated. Thanks.

Robin