Need to add adjustments to the site on Modx evo

You need to add adjustments to the filter and some pages of the site on Modx evo
If in a brief description:
1.Configure filter
2.Add adjustments to the admin panel
3.Create a 404 page
Detail:
https://docs.google.com/document/d/1kQomKyoj7AXiR4...
Please specify the terms and cost. Thank you.