I. if you seek help with your particular model, you can follow Troubleshooting, 2.1.1 to send us your model along with information about what you are modelling (sketches illustrating the geometry, loads and supports, questions to be answered through the analysis, what is the difference between the bond laws, which should act on 2 segments of a single bar, ...).
If you explain us your targets, we can probably help you find a way.
II. Ad blocking bond slip for some nodes: please see the option "no slip at the beginning / end".
III. If you have ribbed bars, you typically do not need any bond law (provided your mesh is fine enough), as the bond damage is reasonably captured by cracking in the concrete (and confinement works in the concrete...).