Could someone please help me with direction to the Sogo Fukushi Kaikan Hall from the main Yokosuka Base?

16th Japan Festival In Yokosuka - Sogo Fukushi Kaikan Hall

I saw that when I searched the site, but I don't get it?
How do I know where to walk? (I'm pretty new here so I don't know how to read these kind of maps yet.)

I had heard it was in walking distance from the Chuou station, but that map shows it right outside the door of the base between the main gate and Daiei. (Have I been walking past it all this time?!? OMG!

There is a path just past the police station walking toward Daiei that looks like it's going to the base, there's a little playground there. Follow the path to the right and you will see a parking garage. Either enter the garage and go through the sliding door or continue to the bicycle/motorbike parking and small parking lot and turn right into the building.
If you miss the path, there is a driveway that leads to it as well. Just turn right and follow it to the building.
You can see the building through the fence behind Club A and the inspection area , so it is very close to the base.

Oh, wow! Thank you! I realize now that I HAVE been walking past it all these times we go between Daei and the main gate. Gosh! I feel dumb!

Have you gone to their events before?

I've been going to Japanese class there weekly.
I also have been to their culture fairs. They are rather nice.  They have kimono dressing, ikebana, calligraphy, koto lessons, and obon dance.