Clarification on rules that few teams having trouble with

Just to clarify on a few rules that a few teams are having a problem with. At the agm Darren mentioned something about an exstract he has seen that you can stop the white ball going into the pocket. 

so to be clear this will be a foul. A copy of the extract from the black ball rules is below and as follows 

7e Catching or preventing a ball going ‘in-off’.

If the cue ball is going ‘in-off’ and the player catches that ball,

preventing it from dropping into the pocket and entering the table

mechanism, then it is loss of frame.

And also another one is the maximum amount of players that can be played.  This will be  12 players in the winter as everyone will play one frame each.