1. Navigate to the Main screen and tap on the Master Mixer Strip marked with a crown logo on the left section of the screen.
Anything applied to this strip will affect your entire project.
2. Tap the FX tab, then select an empty slot marked with a + icon.
3. Select a plugin from the list of FX. In this example, I have chosen Para EQ. As long as this plugin is selected and active, the EQ settings will be applied to all tracks in my project.