This is a script that will help you to hack your Desktime activity by moving mouse continuously

Desktime.Hack.ps1

# Clear the host
Clear-Host

# Write/Log the starting date and time
Write-Host "Desktime Hack Started At" (Get-Date -Format G) -ForegroundColor Red

# Load assembly to manipulate mouse funationality
Add-Type -AssemblyName System.Windows.Forms

Add-Type @"
using System;
using System.Collections;
using System.Collections.Generic;
using System.Runtime.InteropServices;
using System.Text;

public struct RECT
{
    public int left;
    public int top;
    public int right;
    public int bottom;
}

public class pInvoke
{
    [DllImport("user32.dll", CharSet = CharSet.Auto, CallingConvention = CallingConvention.StdCall, ExactSpelling = true, SetLastError = true)]
    public static extern bool GetWindowRect(IntPtr hWnd, ref RECT rect);

    [DllImport("user32.dll", SetLastError = true)] 
    public static extern bool ShowWindowAsync(IntPtr hWnd, int nCmdShow);
}
"@

# Filter all unnecessary process
$currentProcess = Get-Process | Where-Object {$_.MainWindowTitle -ne "" -and $_.Path -notlike "*\SystemApps\*" -and $_.Path -notlike "*\WindowsApps\*" -and $_.Path -notlike "*\ImmersiveControlPanel\*" -and $_.Path -notlike "*\system32\*" }

# Declare gloabl variables
$addOrRemovePosition = 1;
$estimatedTimeForEachProcess = 1;

# Minimize all active windows
Write-Host "============================================== Minimizing All Windows ==============================================================" -ForegroundColor Green 
$shell = New-Object -ComObject "Shell.Application"
$shell.minimizeall()

# Window count
Write-Host ($currentProcess.Count) "Active Processes Found" -ForegroundColor Yellow

# Perform mouse movement
while ($true) {
    foreach($process in $currentProcess) {
        Write-Host "====================================== Perform Operation On" ($process.MainWindowTitle) "===================================" -ForegroundColor Green
        Start-Sleep -Seconds 3

        # Maximizing current window
        Write-Host "Maximizing window" -ForegroundColor Green
        [pInvoke]::ShowWindowAsync($process.MainWindowHandle, 4) # Maximizing window

        # get the window bounds
        $rect = New-Object RECT
        [pInvoke]::GetWindowRect($process.MainWindowHandle, [ref]$rect)

        # Moving cursor to the current window's middle position
        $x = ($rect.Left + $rect.Right)/2
        $y = ($rect.Top + $rect.Bottom)/2
        [System.Windows.Forms.Cursor]::Position = New-Object System.Drawing.Point($x, $y)

        for ($i = 0; $i -lt $estimatedTimeForEachProcess * 15; $i++) {
            $currentCursor = [System.Windows.Forms.Cursor]::Position
            $x = $currentCursor.X + $addOrRemovePosition
            $y = $currentCursor.Y + $addOrRemovePosition
            [System.Windows.Forms.Cursor]::Position = New-Object System.Drawing.Point($x, $y)
            Start-Sleep -Seconds 3
            $addOrRemovePosition *= -1
        }
        Write-Host "Minimizing window" -ForegroundColor Red
        [pInvoke]::ShowWindowAsync($process.MainWindowHandle, 2) # Minimize window
    }
}