Certificates, keystores and App Store keys are shared within this sub-org.
They belong to Acme Corp's Apple / Google accounts and are reused across that sub-org's apps only. Manage them once in Resources › Credentials; here you pick which ones this app uses and set the app-specific identity.
Signing Manager only.
Developers can trigger builds but cannot view or change signing assets here. Attaching or rotating a credential is written to the audit log.
iOS signing
com.acme.mobile
Acme Mobile App Store
Acme Distribution used by 3 apps
Acme ASC Key used by 3 apps
Android signing
com.acme.mobile
Acme Upload Keystore used by 2 apps
acme-upload
Acme Play Account used by 2 apps
Signing ready
Both platforms can sign and ship. Shared assets stay valid for every app that references them.