I don't know if this is possible but on my sketch I have used some Arduino layout for example: [https://easyeda.com/modules/ARDUINO-PRO-MICRO_37f84fd49e0046a2b8c6c3bacf1395e1](https://easyeda.com/modules/ARDUINO-PRO-MICRO_37f84fd49e0046a2b8c6c3bacf1395e1)<br> <br> I would like to add female pinheaders to hold it to the board which are assembled on it at manufacturing like this:  I checked the library chosing JLCPCB assembled there are similar connectors like HDR-TH_9P-P2.54-V-F-1 but if I would to use these then I would have to delete the Arduino layout and put these to where it's pins are so my question is: Isn't there an easier way you can replace them with these type of connectors still using the original library? <br> Also I have a bunch of regular round shape holes what I just placed with "P" on the board and will serve as male pin headers like these:  isn't there an easy way to replace them with these pin headers without deleting them finding something in the library and replacing them? <br> Also 1 final question about the BOM: will everything in the BOM with JLCPCB partnumber be pick and placed on the board? I ask because I have used layouts with referring parts but I don't want all of those to be added to the final assembly just the connectors what I select, how is this works? Thanks