Hi JP,The best procedure to follow when starting a drawing is to select File | New and then select the environment you want to work in, e.g. Block Schematic, then insert the symbols you want, insert interconnections using the Dogleg and Cable tools, and finally add the Title Block.
You should scale the Title Block to fit the drawing, not the other way around: if you scale the drawing it will fall off the grid and be difficult to edit later. Also, the default Page Setup ensures that your print will fit to page, regardless of the drawing size, or page size selected. To scale the Title Block you will need to check Options | Scale Symbols, and you should hold down the Shift key while scaling to maintain the proportions of the Title Block.
I hope this is helpful.