I am just getting started with the MikroTik gear, coming mainly from the Cisco world. I purchased a Routerboard RB2011UiAS-2HnD-IN WiFi router to be deployed as the gateway device to my home computer lab. The layout is roughly as follows:

The lab network switches will use the Ethernet ports on the Routerboard to connect their external / internet interfaces. I would like the Routerboard to get its upstream connectivity using its own WiFi link to connect to the existing home WiFi router.
How would I configure the MikroTik Routerboard to do this?
Thanks for any advice!!!!