A family of Microsoft relational database management systems designed for ease of use.
Do what Dale says.
Resources which are Work type resources have resource calendars and are limited so they can be over-allocated.
Resources which are Material type resources do not have resource calendars and are assumed to be sufficiently available always.
You can have a Material type resource called "brick" and assign it in various quantities to various tasks.
To assign resources and specify the quantities assigned, I prefer to use the assign resources button/dialog box, but using the lower pane split is good too.