Thanks for your reply! Perhaps my understanding of these files are limited. I thought jwpub files could follow similar patterns with that of epub files.
And to your second point, I support sign language congregation, and in sigh language, there is no epub files for OCLM, so we simply use epub, from other langauge such as English, which works great, but bible reading or ending song # are sometimes different, thus wanting me to inquire about jwpub :)
Fair enough. I think the jwpub files are only readable in the JW Library app.
Actually to enter the programme details, the epub file is not essential (though it is extremly useful in saving a lot of work), since everything can be added by hand. I say this, because this means anything entered by uploading the workbook, can be modified afterward, which is what you may need to do.
In Settings, LMM Meeting, the middle (Schedule) tab, select the week that needs modifying, doubleclick the song(s) that need changing.
When in a particular week, the individual programme items are listed in the bottom box, where again you can select Meeting Item (=dropdown), Theme, Source and Timing, and modify. Generally the Meeting Item will be OK, but the other things need changing from time to time, like this week when the originally planned convention video is cancelled and replaced by the GB update. This also brings with it changes in timing.