I jut created a character that was a third level battle master, human variant so he gets to select a feat.  The feat he selected was for Martial Adept.  This gives him two additional maneuvers.  The problem that I am having is that everything shows on the character sheet, but those two additional maneuvers do not show under the actions tab at all and you have to navigate over to features and then 'feats' to even tell what they are.

I'm sure this is because I have done something wrong, jut looking for some help!

You have done nothing wrong, the Actions were not added to the feat, it is known and on the list of things that need fixing. In the meantime you can make a homebrew copy of the feat and add the action to each of the relevant Options. (That’s basically what the Devs have to do to fix the original anyway, the just don’t need to make a copy first.)

So I made a homebrew copy of the feat (added it as a custom action) so I was able to get the description at least into the 'all actions' section. I am just struggling with making it limited use and being able to do thet where ti has a check-box like all of the other limited use abilities. I don't see an option to add this to the action in the custom action list.

The feat already has an action with a checkbox for the additional 1d6 that you get. There is no way to make this feat use the same boxes that the regular Maneuvers use. The player will have to remember to check off the correct box depending on if they use their regular Superiority Die, or the special d6 superiority die granted by the feat.

Thank you!