I figured it out.

C:\Program Files\Laserfiche\Laserfiche Forms\Forms\Views\Shared\_LogOnPartial.cshtml

I made a copy of the file and named it as _LogOnPartial_ORIGINAL.cshtml to retain what was there before, and then I edited the _LogOnPartial.cshtml file to include the links I was trying to add.

Previously it said these three lines for the About and Logout sections with a separator: 

			<li><a href="#" onclick="window.open('@Url.Action("about", "home")', '_blank', 'toolbar=no, menubar=no, width=553,height=278,left=430,top=23');return false;">@Resources.STR_ABOUT</a></li>
			<li class="list-separator"></li>
			<li>@Html.ActionLink(@Resources.STR_LOG_OFF, "LogOff", "Account")</li>

I added additional lines for another separator and the links I wanted to add: 

			<li><a href="#" onclick="window.open('@Url.Action("about", "home")', '_blank', 'toolbar=no, menubar=no, width=553,height=278,left=430,top=23');return false;">@Resources.STR_ABOUT</a></li>
			<li class="list-separator"></li>
			<li><a href="https://URL GOES HERE" target="_blank">ServiceDesk</a></li>
			<li><a href="https://URL GOES HERE" target="_blank">KnowledgeBase</a></li>
			<li><a href="https://URL GOES HERE" target="_blank">Create Ticket</a></li>
			<li class="list-separator"></li>
			<li>@Html.ActionLink(@Resources.STR_LOG_OFF, "LogOff", "Account")</li>

End result, the menu now includes the custom links I wanted for our staff to seek help from our team internally: