From the web panel in the group configuration you can define a default signature format for signatures made on the server and client.
For PDF signatures
TYPE_FORMAT_SIGN_PDF
PADES_B
PADES_T
PADES_LT
PADES_LTA
Para firmas XAdES
TYPE_FORMAT_SIGN_XML
XADES_B
XADES_T
XADES_LT
XADES_LTA
Para firmas CAdES
TYPE_FORMAT_SIGN_CADES
CADES_B
CADES_T
CADES_LT
CADES_LTA