That what you show is the logwatch section. Inside this section you need to make your configuration.
Please only edit the file “check_mk.user.yml” inside the C:\ProgramData\checkmk\agent
Inside the shown config you see the line
- '*': warn nocontext
This means from all logfiles only transfer warn and crit messages.
Inside the mentioned “check_mk.user.yml” you find the description what you can configure.