If an aircraft needs to be moved on the ground with a towbar, it is possible to insert such information to Leon and use it when planning the trip.
The 1st step is defining at which airport the towbar is needed: edit the airport in Airport Directory panel and mark a checkbox Towbar Required.
The 2nd step is defining for a particular aircraft, whether a towbar or a towbar head is on board. Edit the aircraft profile and in a tab OPS select one of the options from the drop-down box.
Once these 2 details are set up, Leon can show automatically a checklist item or not, depending on the option's selection in the aircraft profile:
Towbar on board > No checklist item
Towbar head on board > Checklist item
Towbar not on board > Checklist item
Towbar head not on board > Checklist item
Towbar available but not on board > Checklist item