SNMP Get and Set Community

i think it helps to provide some more information, what you write now doesn't directly tells me what you want.

perhaps google first for F5 SNMP configuration (and your version), if that doesn't get you anything please provide a little more details.

Project provided get community "example" and set community "examplea". They asked to configure in F5 with v3 functionality. Could you please suggest how to configure these community in F5

v3 is username and password not a community...

The config is right below the v1/v2 entry in the menu...