What/where is the menu button?

I am trying to block a phone number (an IRS scammer). Instructions say to use the menu button from the log to block. But after I get into the log I have no idea where the menu button is or what it looks like.

crwdns2934089:0crwdne2934089:0 crwdns2934093:0crwdne2934093:0

crwdns2934109:0crwdne2934109:0

crwdns2889612:0crwdne2889612:0 1
crwdns2934285:0crwdne2934285:0