Just can't seem to find the area where I can add an individual to a Forum. It seemed quite easy a number of years ago

You can add individual accounts or groups as moderators from ACP > Members > Moderators. From there you can set restrictions like certain forums or certain features.

 

Thanks Paul. Much appreciated. Worked it out but not as easy as it used to be.

Came here for this. I like how it is set up, but wouldn't have found it otherwise. 

If you mods have restricted powers, make sure you go through all those settings that open up!