The following is how to add a custom FAA Sectional Chart WMS layer for more information you can also read this post on WMS layers in LP360
1.Select add WMS layer from the LP360 tool bar
2.In the WMS Basemaps dialog select the Custom WMS Layer Manager icon
3.in the Add WMS Layer Window select the WMS Manager button
4.Select the Add… button within the WMS Manager Window
5.Enter an appropriate name for your layer in the Local Name/Alias:
6.Enter the following URL into the WMS Server URL: http://wms.chartbundle.com/wms?
7.Select your desired chart and move it to the SelectedLayers: menu
8.Select the appropriate coordinate system for your chart selection
9. Select OK then in the WMS manager Window select the newly created layer and select OK again
10.In the WMS layer window Select OK
11. Close the WMS Base Map window and your WMS Layer should now be in your layers window.