Beginner questions

I am a new user to InstantText, having purchased the Pro version a few weeks ago. I have generated a few questions in that time. My first task has been to compile glossaries. I typically write primarily on one of two topics, with some overlap. My intention is to have a single glossary for common words, that is included in the two other, more specialized glossaries.

When I try to merge glossaries and save the result, I am not getting a dialog box to name the merged glossary and I don't know where it went.

Does the Enrich function put every word in the selection into the glossary, regardless of word count? I gather from the manual that a multiple compilation combines the individual files before compiling. Does this mean the word count limits apply to the combined set of documents?

I have a frequent need to use greek letters (for scientific writing) in both Excel and Word. Using formatted text to use the symbol font works in Word, but not in Excel, to do something like microns.

Why are there 430 phrase entries in a new glossary that can’t be deleted?