Making your own custom roblox studio tool (in a plugin)?

I'm planning of creating a modified Rotation tool that could optimize my working in Roblox studio.

However, I have an issue, and I don't know how to unselect the current tool (I mean, the Select, Move, Rotate and Scale tools). For example, the roblox animation plugin disables them and allow you to use the secondary plugin tools.

If I had an event like that, I could script something like, when you click on a part, It creates an ArcHandles object inside It and program the way you rotate it, without actually selecting that part.

Sorry If I suck explaining myself. Do you know how to unequip the current tool, or simply, disable selecting parts when clicking on them?