You posted this in the generic LDS Tools forum, so I can't tell what mobile platform you are using. On my LDS Tools for Android, I can see the minors throughout the stake. However, note that I am an assistant stake clerk, and I have that same visibility in the Directory on LDS.org, so I would expect to see the same on LDS Tools -- which I do. That visibility would be different for different callings, and may be different on different mobile platforms (although I would expect that all platforms would use the same underlying webservice, so the platform really shouldn't make a difference).
Questions that can benefit the larger community should be asked in a public forum, not a private message.