You cannot wear a Hat model in a game on ROBLOX, you can only wear ROBLOX's hats in the catalog.
Freee model
Open the model, select the model, then, click on File, Save Selection As Model. If you want it as a model, select it then Publish Selection to ROBLOX.
The easiest way to name a model on roblox is to do it when it is created. First when you are creating a model in roblox studio click the new model button. Here there will be text boxes to name and describe your model, as well as a box to mark it as free or not.
it is a building item
A regen button on Roblox copies a model and then waits for you to stand on a button. When you touch the button it either removes the old model and then pastes the copied model, or it just pastes the model without removing the old model. There is usually a debounce line at the end to make sure that the button can only be pressed once every three to five seconds.
My ROBLOX > Character > Models
by pressing delete?
studio
You can use free model
In Roblox Studio click the model, then go into Edit>Delete
To make your own model, you have to go Build on a game. Make the model you want to make. Click the Drag button. Highlight it. Press File and Publish Selection to ROBLOX. Press Create and name it. Enjoy! ~9tailedfox21 (a.k.a. PrimalBlade or cloner6348 on Roblox)