How to drop a tool when clicking on a new tool?

Hello, so my friend made it to where you can click on a tool to pick it up, which I like, but I want the players who play the game to only be able to hold one tool at a time. I was wondering if there was a way to make it where if a player is already holding a tool, and they click on a new tool, the tool they are currently holding is placed where the new tool was, and the player is now holding the new tool. Thanks in advance!

Since this isn't a code request site I'll tell you how you can write the code yourself. I'd suggest making a script in ServerScriptService. In the script, make an event for when a player joins, then make an event to detect when a child is added to the player's character. Check if the object is a tool, and if it is, then check the player for another tool. If the player has another tool, simply set its parent to the workspace and it will be dropped. I think that should work fine. Try and write the code and if it's not working, then, you can come and ask for help with your code.