You may have seen in other BeamMP online servers that you can type "/countdown" to start a race timer in chat. The countdown isn't a default feature within BeamMP and would usually need a short bit of code to create.
However to save the hassle of learning Lua code, I have uploaded the countdown mod file for you to download below.
To install the the mod extract the zip file to the Resources/Server in the BeamMP server folder.
You should now see the countdown folder placed in the Server folder.
BeamMP Countdown Mod Download
https://shirbsgaming.com/wp-content/uploads/2024/03/Countdown.zip