Customizing Alt =

If you open your Hotkey Glossary you will see that the Add Glossary Entry Hotkey is defined as follows:

{CopySelection}{Wrap}
{AddGlossaryEntryDialog}
input = "text"
moveToTop = "n"
{/AddGlossaryEntryDialog}{Wrap}
{NoSpacing}

You can change it. From what you say, it seems you would prefer it to open blank. If that is the case, just change it to:

{CopySelection}{Wrap}
{AddGlossaryEntryDialog}
input = "blank"
moveToTop = "n"
{/AddGlossaryEntryDialog}{Wrap}
{NoSpacing}