How many power supplies to foresee

What are the rules regarding power supplies? How many devices (dimmers, relays, displays…) can be connected to 1 output?
In the application example manual I see that the 4PB is connect seperately on one output? Is this required/recommended?


A single PSU-unit can deliver 3 x 1A
The manual of each module mentions the max. power consumption of a module (e.g. relay module: 330mA, so 3 relay modules can be connected to one output).
We recommend to connect the pushbutton and relay/dimmer modules to a separate output. In this way, the lights will not turn off if you make a short circuit by mistake, e.g. when connecting/disconnecting a pushbutton module…

Thanks for the clear answer