Delete Specific Message from a Topic (partition)

Hi,

I have a scenario where I produce messages for a given topic (say having 10
partitions), and I have consumer group ( say mygroupID1) with 10 threads
reading those 10 partitions. After consuming, I would like to delete
specific messages from that topic (i.e. from a given partition).

How should I restrict other consumer group say mygroupID2 to read messages
from the same topic?

Thanks for the help,
Srini