Improve the Child Plans Dependancy menu

Problem Definition

When selecting a child pan as a dependancy, only a maximum number of 10 plans is suggested, even when there may be a larger number of appropriate matches.  This menu may not present the desired plan to include. 

Suggested Solution

Add the ability to scroll on the list, rather than to continually "prompt" in the search field, when there are greater than 10 results. Some plan names may be quite long, so variable width for this field would be desirable as well.