Increase number of rows in text area field in edit view of meetings module

I am trying to add rows to the description field window in the edit view of the meetings module, and I am stumped as to where to do this. I have tried to edit editviewdefs.php for this module to add a displayParam, but it appears that the file is never linked, whether in ./custom/<module>/mtadata or ./<module./metadata.

Currently, the field expands to accommodate as much text as it contains in record view, but when I click the edit button, it shrinks to four rows plus scroll bars. Where can I modify this behavior? I am running version 8.0.