So, with only few a few months left before RMS goes end of life in July 2021, I'm still fielding calls and emails from retailers still using RMS as their point of sale software. Since support will be very limited after July 2021 (unless you have a support contact through me/RITE), here are some general resources for "self help":
Official RMS Forum: https://community.dynamics.com/rms
Windows 10 and RMS: http://legacy.rite.us/Support/UpgradingtoWindows10.aspx
My YouTube Channel: https://www.youtube.com/kevinantosh
Card Defender for Microsoft RMS: https://www.youtube.com/watch?v=PsjOU6jhFZM
RMS HQ User Guide: https://www.geminicomputer.com/rms/hq/RMS_HQ_Users_Guide_V2.pdf
RMS HQ Getting Started Guide: https://www.geminicomputer.com/rms/hq/RMS_HQ_GS_Guide_V2.pdf
Don't forget about the "help" option in RMS Manager as well as the user guides that came with the software. These are fairly in depth and very helpful for the average user.
If you have any additional resources that I should list above, please contact me at firstname.lastname@example.org or 208-340-5632.