Hi @Juanf574 , find your aggregate under switchports then select it and I believe there’s an option to Undo/split.
Darren OConnor | doconnor@resalire.co.uk
https://www.linkedin.com/in/darrenoconnor/
I'm not an employee of Cisco/Meraki. My posts are based on Meraki best practice and what has worked for me in the field.