How to get Grid panal to the pixal?

Hey there,

Recently Ive learnt alot about grid panals/Named slots and canvases.

In doing so its rendered my original layout to tatters.

The issue I have is, Im not sure how to put my grids into the correct pixals.

They have weights but How do weights translate to pixals?

Do I just measure the length of the canvas and divide by 3 to get the pixals? and then closely match that using the index weights?

How can I get that box to be exactly 739? maybe size boxes :thinking:

Thanks guys