first time add admin assign issue
add task => add follow up
add time inquiry flp 2 nd time same user not adding
assign user required
add quotation time assign task
PO attach time display party details for confirm party creation
display time default pending-> task list
Quotation PO wise Approval
multiple time entry for payment-> in separate trn table

in stock show delivery date wise display in stock status                                                                            
Invoice ->
Quot to Invoice product wise track
Multiple serial number wise entry