How do I edit tables without it screwing everything up?

Editing tables is disastrous, I want to change the size of 1 column of cells. Changing the size in cell properties does nothing. Changing the table size changes them all. Why can the tables not have individually moveable borders like any other decent text program in the world?

Trying to reformat text in the table is a mess.

Tried creating the table in word and inserting it, pbwiki just screws it up and it is unfixable.
 
sad I’m frustrated
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