Yes you can, they are designed that way. If they haven’t been moved for some time then spray some lubricant into the swivel point and just keep wiggling them until they are in the park position
Figure 09.1 of this manual refers, http://www.jagrepair.com/images/Electrical/XJElectrical/2006 MY XJ Electrical Guide.pdf
follow the lines back from the lights that don’t work, should help you narrow it down.
You may find the parts here or failing that, I believe you can download the parts catalogue from SNG Barrat.
https://parts.jaguarlandroverclassic.com/c2n3418-sill-closing-panel.html?gclid=EAIaIQobChMI5P_S-K-9_AIVh9DtCh2vfwavEAQYBCABEgJCiPD_BwE