There are two ways to make a model, both require you be in either Roblox Studio or Edit Mode:
1. Click and drag the pointer tool over all the bricks you want to be in the model, then press Ctrl+G or click the Group as Model button in the toolbar.
2. Select the bricks you want in the Explorer on the right, then press Ctrl+G or click the Group as Model button in the toolbar.
To Publish, select the Model/group, and select File --> Publish Selection as Model. |