This mod is a simple Dogmeat Follower, which doesn't take the main companion slot.

NMM should put the esp file in the main %data% directory and the bat file in the %fallout4% directory.

To activate the mod simple goto the console and type "help dogmeat2 4 npc_" and look at the listing.

Then edit the dogmeat2me file to change the plugin number for the prid command.

Then in the console type "bat dogmeat2me" two times and you should be good to go...