I'm trying to add tolerances to my drafts, but the option seems to be grayed out. I've even tried backing up as far as the original drawings with no luck on being able to add anything, and google has failed to give me a good answer.
Thanks in advance for the help!
as mentioned by @rehenryjr You have to define what type of dimension and/or tolerance You want to have.
Understanding Your last answer it sounds to me as if You first define the type of dim and the tolerance before creating the dimension itself.
I prefer the other way.
First I create my dimensions and when I have them I consider the toleranceing aspect of the part while adding tolerances to the existing dimensions.
Toleranceing not only is a matter of dimensions but also to have GDT frames , datums, surface symbols, and much more