No, this is not possible.
What you could do in case you need to adjust the Grid:
Hide all Layers except the Layers on which the Grid and Columns are placed.
Then draw Marquees around the Grid Elements that need to be moved and use the Stretch command (CTRL + H) to move them. Everything visible within the Marquee will be stretched, which in case of the Columns means they will be moved since their whole geometry is within the Marquee.
Loving Archicad since 1995 - Find Archicad Tips at x.com/laszlonagy
AMD Ryzen9 5900X CPU, 64 GB RAM 3600 MHz, Nvidia GTX 1060 6GB, 500 GB NVMe SSD
2x28" (2560x1440), Windows 10 PRO ENG, Ac20-Ac27