Hello Clement, thanks for choosing Ikebana! I’ll go over the questions in the same order below:
1. In order to show a tiled layout, please use a page with a “Portfolio” template as the “shell” for the layout and posts of the “Project” type as the individual tiles – you can find more info on this in the “Portfolio” section of the theme manual, pages 4-7.
2. For setting up a menu that filters the grid by specific tags, please see the “Menus” section of the manual, pages 3-4.
3. Please see item 1 in this list ;)
When you download the “Ikebana_WP_Theme_Package.zip” archive from Themeforest, you’ll see the “Ikebana_Manual.pdf” document inside – that’s the theme documentation I’m referring to above.
Sincerely,
Andrii / Satori Studio