It would be nice if a post about importing the S-89 could be made sticky...
In Settings define a Custom Template folder (this must NOT be inside the TB installation folder). Put the pdf which you downloaded form the jw org site into that folder. Now open TB and go to printing. It will do some conversions automatically.
Ah, yes, later I thought, maybe that is what you meant.
If you don't mind I will take these pictures away, because of the names on it.
But as you can see: for Bible Reading, Talk and Bible Study, the form provides no space for the Study#. The student is supposed to look up his material (and the lesson he is working on) for him/herself.
The only reason the extra space is provided (only for First Call and Return Visit), is because these can have multiple instances (like 3 First Calls). So that field can be used to write which one is assigned. In TheocBase the team have decided to use the Study# as a means of identification of those items (but it could be done otherwise).