Is it possible to push an unattended install of DeskCalc to end-users that includes entering the correct name and code?

Yes it is, you may create a batch file like:

networkshare\\deskcalc_uk.exe /NCRC /S /D=C:\Program Files\deskcalc
copy networkshare\\static.ini c:\program files\deskcalc

where /S   ..silent
         /D   ..destination
         /NCRC..no crc check

and static.ini is from an installation with a correct license code 

Some applications don't like pasting metafiles from the clipboard, one of them is FoxIt PDF. We added bitmap export for the PostIt function and show you how to use it as a workaround for tapes and FoxIt PDF.

Choose "Bitmap" as graphic format: 

Export to PDF

Copies the tape to the clipboard

Create a image stamp from the clipboard:

Sticky Notes are probably the most common method used to add notes and comments to PDF documents. To add a Sticky Note, simply click at the "PostIt/Sticky notes icon". A sticky note with the calculation tape will be copied to the clipboard and you can paste it to your documents easily.

Version 7.1.0 now allows to choose the text and background-color of your sticky note. 

Read more: Tape calculator - sticky notes