Does anyone know if there is a way to quickly route between two points with the minimum width of the metal that you want to use? without having to draw the box with the dimensions you want and put the layer

You can change to the “wiring” tool by pressing

space

a few times. Handling is a bit tricky of this mode, but once you get used to it, it is quite handy.

Press the space bar once to go from the "box" tool (crosshair cursor) to the "wire" tool (arrow cursor). The "tools" change all the mouse button bindings, so the wire tool uses button clicks to start/continue/end wires; buttons + control keys place contacts and move up/down a metal layer, and the mouse wheel changes the wire width. (There are multiple tools that the space bar cycles through, so you can get back to the original "box" mode by clicking on the space bar until you get back to the crosshair cursor.)

what are these two for?

The one on the left is the "pick" tool and allows you to use the mouse buttons to select things (cells and/or layers, and labels) and drag the selection around. The one on the right is the "netlist" tool and works with the netlist window. It can be used for things like automatic point-to-point routing, but the setup and use is complicated and not very intuitive.

thanks