In Label Studio Enterprise Version , Column Display and XML Optimization possible?

1. Column Display Issue:
In the image attached, when I select a specific column under the "Regions" section on the right side, I am able to see all columns displayed below the image. However, my requirement is that upon selecting a column from the "Regions" section, only the selected column should be visible beneath the image, rather than displaying all columns.
2. XML Code Optimization:
Currently, to add 25 or more columns, I need to write separate XML code for each individual column. I would like to know if there is a more efficient approach where I can write the code for one column and reuse it for the additional columns, thereby reducing the need for repetitive code.