In weighted categories and categories mode you can select different options on the category. This is especially confusing in weighted categories. In weighted categories you can select:

a) Drop Lowest (numeric entry)
b) Weigh Equally (checkbox)
c) Weigh By Points (checkbox)

Right now you can select all three at once if you follow a particular path, however to an extent these options can be mutually exclusive.

Basically what we should do is gray out options that do not exist, rather that eliminating the option, and the behaviour should be consistent.

For "b", if "a" is set, then you should not be able to uncheck the box. The tooltip should display a helpful message. If "c" is checked, then you should not be able to unset. In other words, this should be grayed out if "c" is set or if "a" has any other number than 0.

For "a", this should only be changable if "b" is set and "c" is not set. The tooltip should be helpful and say why it isn't changable, either that weigh equally is not set, or that weigh by points is set.

For "c", this should not be able to be set if "b" is set and should have a helpful tooltip.

This likely will need a db script to change uses in the DB where we may have weigh by points/weigh equally and drop lowest used in an illegal manner.