Hi Kumar,
There are two methods to achieve this,
1. The straight forward method is, for every vehicle pool, there is a functional location is associated with it.
When the equipment (Fleet) is installed in that functional location, it will be displayed automatically in that pool. So if you want to excude it, un install the equipment from that functional location for the given period.
2. Other way is change the equipment as inactive, then with the help of your ABAP consultant, change the display setting on PAM planning board such that, whenever the equipment is inactive, it should not display in planning board.
I hope this satisfy your query.
Regards,
VINOD.V