I own a MINIX Neo U1, a Google Home Mini, four Amazon Echo Dot, and two Broadlink RM mini 3.
The Broadlink RM mini 3 only emits IR, thus, it can only do what the original MINIX remote does (the remote which came inside your MINIX retail box).
I only have it to turn on and off my MINIX.
As already mentioned, I have this set up through scenes.
To have more ease - like in a TV - you should add a TV remote - for a Philips TV, for example - and then change each button to what you intend.
Honestly, I do not intend of adding more functions in IR mode.
I am thinking on buying the Broadlink RM pro, in order to also emit RF signals to control the box, replicating the A2 Lite remote. But I am not sure if it will work.
Furthermore, I just bought the Mi Box S (from Xiaomi, for ~€60), which is an Android TV box.
This way, I can control it through the Google Home Mini.
It is important to note that I never got the Broadlink working with the Google Home Mini.
I have it working through Alexa (Amazon Echo Dot), which I prefer.