What is very much important for keeping attention in meeting for long time ?

listening .............. USE OF TWO EARS EFFECTIVELY RATHER THEN ONE TONGUE ,,,,,,    MEETING MUST BE INTER ACTIVE RATHER THEN BORE PRESENTATIONS ............. GOOD DAY

Encourage discussion in the topic by all. Once an opinion is served an interest is created to concentrate on all issues mentioned in the meeting and involved participation is almost assured.

Making it One topic at a time and everyone should be involve. and make sure the issues were resolved pertaining to the meeting at hand.