Below is the sample part to demonstrate the function to split a surface and move a surface.
Model Prep – Split
Create a line on both sides of the feature that you would like to Split / Move.
MODEL PREP > Split Solid Face
If there is a solid history linked to this part, the pop-up below may occur. In order to process, the history will need to be removed.
and select the dividing line.
Repeat for the opposite side of the solid.
Model Prep – Move
MODEL PREP > Move
Pick all faces of the feature.
Click on the stem of the arrow of the desired axis and drag the gnomon in the desired direction.