How to unprotect netlist?
There is an option in the main menu Project->Nets->NetlistProtected (Uncheck this box )
When netlist is protected, it is impossible:
- delete a part if at least one pin is connected
- change the part number
- connect pin to netlist
- remove pin from netlist
Your should know that:
- Parts with just one pin can be added to the netlist by dragging connection, and can also be removed from the PCB, if desired.
- Footprint can be changed if the number of pins does not become less.