For Pack meetings, your Den/Patrol may be assigned an opening or closing flag ceremony.  There are many "theme" flag Ceremonies found on the Internet, but this is information for a basic flag ceremony.

For an indoor ceremony, choose two "flag bearers" - one the US flag and one for the Pack flag.  Also choose one "caller".

The flag bearer with the US flag enters first and is followed the the flag bearer with the Pack flag.  The color guard walk in after them.  The caller is the one who calls the Scouts to attention and commands the flag bearer and color guard.