Portfolio Menu in Soledad

Hi everyone, first post. This is my first time building a website, first using wordpress, first time using a theme! I’m making very slow progress!

I’m using the theme Soledad, what I’d like to know is the following:

please have a look at this link:

https://scottishgraffitimurals.co.uk/cafes-restaurants/

I would like the primary menu to be a series of tabs each denoting the various industries I have done artwork for, and each tab leading to a portfolio, showing the different clients I have done artwork for (at the moment I’m still playing with the stock photos from soledad!). When you click on offices, or cafe/restaurants or whatever – I’d like the different photos to open out as displayed at the moment, in three columns – BUT instead of having the name of the industry on the featured image (as in the menu and portfolio header) – I’d like to have the name of the client on each photo.

I have a lot of work to show, and having the industry names across the primary menu, with the different customer’s projects grouped into separate portfolios seems the most logical way!

I am having real difficulty with this, I’ve been at it three days already. But I love the look and layout of the soledad/travel theme as linked below.

https://pencidesign.com/soledad/soledad-travel/?slider=style-1#

please help!!

thank you in advance

Andy