To hide the marked items in the screenshot, first create a copy of the theme for your network merchants.
Next, in the template file destination.tpl, remove or comment out the following lines using HTML comments (<!-- ... -->):
<tr><td>{widget id="D"}{widget id="DHelp" class="Inliner"}</td></tr>
<tr><td>{widget id="DPanel" class="DefaultLocation"}</td></tr>
Removing these lines will hide the option "Replicated site is at default location." However, merchants will still need to use the second available option to activate this setting, as the first one represented the previous value.
Update the replicated_site_source_radio.tpl File
In the file replicated_site_source_radio.tpl, also remove or comment out the following lines:
<tr><td>{widget id="L"}{widget id="LHelp" class="Inliner"}</td></tr>
<tr><td>{widget id="LPanel"}</td></tr>
This will remove the "Replicate local files" option from the available settings.
Set Theme and Adjust Permissions
After making these changes, it is recommended to set this customized theme as the default for all PAN merchants.
To prevent users from changing themes, remove the Theme permission (read and write access) from their accounts.