Sharing clock pin on Pro Micro
It is indeed possible and supported to use different CS (chip select) or SS (“slave select”) lines to address individual SPI devices on a single bus run by an SPI “master”.

Image from Wikipedia
Many SPI TFT Touch displays need this to address the display controller and the touch controller as individual SPI devices and/or an integrated SD Card interface (wich also uses SPI).
The MOSI, MISO and SCLK lines can be reused and shared between perpiheral devices, as long as only one device is actively being addressed at any point in time. I.e. only one SS/CS may be active at any time and the software must support such sharing of SPI resources.