Best way to use a wireless keyboard with zenbook with no usb-a ports and attached zenscreen monitor

[Ect411]

I have a zenbook which come with USB-c/thunderbolt ports and am purchasing a zenscreen monitor.  I would like to use a wireless keyboard/mouse to control both displays.  Most require a usb-a socket to connect the dongle.  What is the cleanest way to accomplish this? Can I use the port in the monitor? 

[Falcon_ASUS]

@Ect411 
Could you please let me know the full model of your laptop?
Generally, ZenScreen needs to be connected to the laptop via USB-C, while wireless keyboards/mice are usually sold as a set and paired with the laptop using a USB dongle. Thank you.

[Ect411]

Laptop is ux3402v, monitor I purchased and waiting to receive is hdr10+