Open the Pokémon’s summary or move menu
Select the move you want to use
Choose the Plus Move option if available
Confirm the move when prompted
Use the required gauge or resource to activate it
Make sure the Pokémon knows the base move first
Check that the battle conditions allow Plus Moves
Use Plus Moves during battle when the option appears
Refill the required gauge before using another Plus Move
Repeat the process for other compatible moves