Hi, sorry for the late answer;
To insert as image, first you click and hold on the tile in the base view, then hold shift when dropping in excalidraw.
The set grid plugin you access it by clicking on the top right icon of excalidraw, "obsidian tool panel", then you click the first icon "Install or update excalidraw script", and then you look for "set grid" and also "grid toggle" I found quite useful.
Let me know if you have troubles.


