Draw grid

Draw a grid - Manual

Set-StrictMode -Version 2
$ErrorActionPreference = "Stop"

Import-Module Visio

New-VisioApplication
New-VisioDocument

# Draw the vertical lines
for ($x=0; $x -le 8.5; $x++) 
{ 
    New-VisioShape -Type Line $x,0,$x,11 
}

# Draw the horzontal lines
for ($y=0; $y -le 11; $y++) 
{ 
    New-VisioShape 0,$y,8.5,$y 
}