I think you are close.

Yes, using the slash root will make the bass very likely to play the note you specify as the slash root. It's not 100% because the longer the chord is held, the more likely the bass may jump to a fifth or other note as a real player might.

If you really want the bass to land on one and only one note for any extended time, try using the Pedal Bass feature. Even that won't stay on the root 100% of the time; depending on the style, it's not musical; but it may play the root more than if you are using the slash bass. Experiment with the Pedal options.

The bass part may have notation, which you can see by the value 'N' in the Chart column of the RealTrack picker. If it does, this is a MIDI representation of the notes played by the RealTrack, so you WILL see the notation on the bass track. Just be aware it is for reading/educational purposes and is not used for sound, since it has no articulation, dynamics, etc.

BIAB 2025 Win Audiophile. Software: Studio One 7 Pro, Swam horns, Acoustica-7, Notion 6, Song Master Pro, Win 11 Home. Hardware: Intel i9, 32 Gb; Roland Integra-7, Presonus 192 & Faderport 8, Royer 121, Adam Sub8 & Neumann 120 monitors.