Basically, you are asking that most features added to the program over the years for the convenience of users be bypassed. If that is what you want, you should reconsider your selection of Manager as your software. The program’s development has followed a certain philosophy, which may not be appropriate for all users.
I wrote about a similar situation just a few days ago: GST inclusive profit and loss - #15 by Tut. I reproduce the relevant portion here:
…it seems legitimate to consider a professional’s duty to educate management personnel on the real meaning and proper interpretation of standard financial statements. Blind acquiescence to unjustified requests merely to perpetuate longstanding distortions of accounting practices isn’t a valid reason to incorporate improper procedures into a publicly distributed program.
In that case, clients were demanding distortion or violation of fundamental accounting principles. In your case, your clients are not requesting distortion of those principles so much as regression from modern practices. When daily journal entries were entered by hand, there was a reason for a single, common sequence. That reason no longer makes sense.