Summary: A suggestion for making it easier to position decoupling capacitors.
If you're using KiCad, here's a useful tip for organizing decoupling capacitors. In your schematic, assign references to each decoupling capacitor using the format C#-U#. For instance, if IC U1 has capacitor C3 as its decoupling capacitor, label it as C3-U1. This system makes it easier to arrange capacitors during PCB layout. After finishing your PCB design, rename the decoupling capacitors in the PCB Editor. Be sure to keep your schematic updated by going to Tools > Update Schematic from PCB whenever you make changes.