Grid for subpages

I want to use a grid for Lookbook page on my websitehttps://www.kameleonchic.com/portfolio/
and put all subcategories mentioned there on a grid (editorials, dressing mannequins, flat lay outfit, moodboards) instead of inserting a link (like I did).
When I wrote the code (on Lookbook page) is showing all the posts I have on blog (Lifestyle). It's a new code for a new grid I've initiated.
I'm already using the grid plugin for the blog (Lifestyle) and I am happy about it.
Please tell me if I can use the plugin for a page and all subpages related to this (Lookbook page mentioned before).
Thank you very much for your time and for the plugin.
Best,
Krina