Ctrl+K
in the Preference Menu "OUTPUT TAB" paste the

Split File Name:
{JobID<2>}{Customer<50>} [ ]{JobName<50>}[ Sig]{Sig<2>}[ Side]{Side<1>}[.pdf]

then OK

Ctrl + P in the General Tab

Output Format
Divide By: select "SIDE"
and make further changing as per your Job

then Click Print