Running 2020 here and have an issue I've never seen before and it is driving me crazy. I want to add some dimensions to a model. I can select my two points and the leaders and dimension show up. However, when I go to click to lock the dimensions in place it won't do it. Is there something I may have accidentally changed that would cause this behavior? Thanks

I am working on some parts that will hold some optics at subtly different angles from each other. Is there an easy way to find what other faces on the solid are parallel to the face I am about to set a plane to? Thanks.