Power supply management

I am currently in an apprenticeship and I don't understand how to manage my power supplies. Indeed, my project consists of implementing a SPI BUS with an Arduino Uno R4 Minima as the master card and Texas Instrument evaluation modules (the ADS8568EVM-PDK and the DAC8718EVM) as slave cards. I don't understand the technical documentation well and I would need help with managing the power supplies for each part of the system.

Thank you in advance.

First get a copy of the Arduino Cookbook, that will give you some of the basics. Put together a requirements document. Then do an annotated schematic showing all connections, power, ground and power sources. Post the schematic when you get that far.