The PCB Footprint for the STM32MP151AAD3 has only surface mount pads because that is what the manufacturer recommends: To connect to these pads you use a short track to a via between the pads as shown in the Footprint recommendations in the device datasheet. [https://www.st.com/resource/en/datasheet/stm32mp151a.pdf](https://www.st.com/resource/en/datasheet/stm32mp151a.pdf) Trying to mount a bga to pads that have vias on them is very unlikely to be manufacturable. If you must edit the Footprint, you can select all the pads in it at the same time then edit the pads parameters for all of them simultaneously in the right hand panel. You will have to make a copy of a suitable Footprint first. And before you do that please read (2.3) in (2) in: [https://easyeda.com/forum/topic/How-to-ask-for-help-and-get-an-answer-71b17a40d15442349eaecbfae083e46a](https://easyeda.com/forum/topic/How-to-ask-for-help-and-get-an-answer-71b17a40d15442349eaecbfae083e46a)