Specialty retail invoice tracking

I have a specialty retail store that sells items that then need alterations, customizations, pressing and storage for pick up or delivery. I am looking for something that can be used on tablets for each employee to log an invoice (preferably load invoice from existing software). Example clerk making sale would log sale of invoice and what she did with order (put in alterations or Embroidery). Clerk in Alterations or embroidery would then receive the invoice/order and log their work done then log where they put it...to pressing or to completed ready for pick up or logged into delivery route for delivery where clerk would log it our for delivery when taken or clerk would log it as picked up once picked up by customer. I would also like the ability to have customer sign for invoice/order when picked up.