I need help creating this BPMN, I'm not sure how to go about it. Thanks in advance!
Problem: A collaboration model with full orchestration for Baer Belly's Bikini, but choreography only for external participants is plenty (in other words - I need to see the Supplier pool, but none of the Supplier activities. I need to see the message flows between the BBB and Supplier pools whenever there is interaction, and I should see all of the BPMN objects from start to end in the BBB Pool). Please show the multiple roles (as separate swimlanes) in the BBB pool.
Text: 
BBB works closely with local fabric vendors to determine the color themes for each season's products. When BBB has received enough orders from the retailer customers to estimate the quantity of swimsuits and products to manufacture, BBB then orders the required quantities of fabric and related materials from the fabric vendors. BBB pays each fabric vendor at the end of the month for all purchases during the month. For each fabric order, there is one receipt. For each receipt of fabric, there is one order. Consequently, the order and purchases (receipts) can be modeled as one event. Details of the Fabric Purchase Process 1. The Production supervisor places an order for fabric according to internal estimates of production quantities (the estimates are not part of the project). 2. Fabric vendors ship fabric in bulk to BBB usually within 2 weeks of the order. 3. A Shipping and Warehouse employee receives the bulk fabric and verifies quantities received. BBB Miscellaneous Purchases BBB also purchases miscellaneous services and supplies, such as electricity, water, sewage, garbage, phone, and janitorial services. It also pays monthly rent on the building, purchases office supplies, hires photo shoot models and photographers, and so on. BBB pays its miscellaneous suppliers at the end of the month for all purchases during the month. BBB Cash Disbursements BBB assigns sequential numbers to each check issued. All checks for purchases (both fabric and miscellaneous) are written on its main bank account. BBB works closely with local fabric vendors to determine the color themes for each season's products. When BBB has received enough orders from the retailer customers to estimate the quantity of swimsuits and products to manufacture, BBB then orders the required quantities of fabric and related materials from the fabric vendors. BBB pays each fabric vendor at the end of the month for all purchases during the month. For each fabric order, there is one receipt. For each receipt of fabric, there is one order. Consequently, the order and purchases (receipts) can be modeled as one event. Details of the Fabric Purchase Process 1. The Production supervisor places an order for fabric according to internal estimates of production quantities (the estimates are not part of the project). 2. Fabric vendors ship fabric in bulk to BBB usually within 2 weeks of the order. 3. A Shipping and Warehouse employee receives the bulk fabric and verifies quantities received. BBB Miscellaneous Purchases BBB also purchases miscellaneous services and supplies, such as electricity, water, sewage, garbage, phone, and janitorial services. It also pays monthly rent on the building, purchases office supplies, hires photo shoot models and photographers, and so on. BBB pays its miscellaneous suppliers at the end of the month for all purchases during the month. BBB Cash Disbursements BBB assigns sequential numbers to each check issued. All checks for purchases (both fabric and miscellaneous) are written on its main bank account
