Welcome to the forum.
This problem sounds like the viewports are in modelspace, and were created with the Viewport Configuration Dialogue?
If so, you can neither LOCK nor SCALE them, although you can zoom them to resize.
Are you talking about your PROPERTIES or your QUICK PROPERTIES palette?
If you are talking about your QUICK PROPERTIES, then right click inside the palette, select CUSTOMIZE,
then set the appropriate choices to be included in the VIEWPORT QUICK PROPERTIES palette display.
Click SAVE when you are finished making your selection.