Install ReportPortal.NLog NuGet package.
PS> Install-Package ReportPortal.NLog
Add custom extension in NLog configuration.
<nlog>
...
<extensions>
<add assembly="ReportPortal.NLog"/>
</extensions>
...
</nlog>
Define custom target.
<nlog>
...
<targets>
<target name="RP" xsi:type="ReportPortal" />
</targets>
...
</nlog>
Specify rule for logging messages to custom target.
<nlog>
...
<rules>
<logger name="*" minlevel="Trace" writeTo="RP" />
</rules>
...
</nlog>