The Mockup Furniture Catalog can be very useful to sketch your ideas.
Moreover, you can change the size and the colours so they represent, for example, your own furniture that you're taking to your new place or you will use to re-arrange your home.
To edit a furniture item, simply select it and click on the i-button.
You can enter the exact measurements for Width / Height / Length and you can also select a colour from our palette. You can also change the width and the length without opening the Property Inspector. Simply drag the outline points to adjust the size of the furniture.
Next to mockup furniture Roomle supports configurable products as well. For details see: https://support.roomle.com/hc/en-us/articles/360028639791-How-to-configure-products-in-Roomle-