Consider the following process at a pharmacy Chain

Pharmak, the largest pharmacy chain in the country, introduced the tap$-$and$-$pick e$-$prescription delivery service in January $2019.$ This service allows a customer to place an order for an e$-$prescription with just two $“$taps$”($or clicks$)$ and to pick up their order at their selected pharmacy store.

To use this service, a customer should first register via Pharmak$’$s Tap$-$and$-$Pick app, $($or via the equivalent Web app available in Pharmak$’$s web site$).$ When a registered customer has an active e$-$prescription recorded in the national e$-$prescription system, the customer is able to see this e$-$prescription in the Tap$-$and$-$Pick app. They can then select an active e$-$prescription, select the pharmacy store where they wish to pick up the medicines, and pay for the medicines. Thirty minutes after paying $($or whenever they wish within $48$ hours of placing their order$),$ the customer can pick up their e$-$prescription order at the selected pharmacy store.

When an order is submitted $($and paid$)$ by a customer, it is first routed to the pharmacy's backend technician at the pharmacy store. The technician takes an empty bag, writes the name of the customer on the bag, collects the medicines listed in the e$-$prescription and puts them in the bag. Then she puts the bag in a "quality assurance" $($QA$)$ area. The bags in the QA area are those that have not yet been checked by the pharmacist.

From times to times, the pharmacist picks up a bag from the QA area, types the name of the customer into the pharmacy information system, and verifies that the medicines in the bag are the correct ones $($and that all required medicines are there$).$ If anything is incorrect or missing, they fix the issue. If the pharmacist finds any medicine in the prescription that requires special instructions or attention $($e$.$g$.$ a medicine that may cause strong secondary effects to the customer$),$ she writes an $"$X$"$ with a red marker on the bag. This means that the bag cannot be handed off to the customer without an interview with the pharmacist. The pharmacist then puts the bag in the pick$-$up area.

When a customer arrives, they give their ID card to the customer service representative. The customer service representative enters their ID code to retrieve the details of the customer$’$s e$-$prescription order. The customer service representative then looks for the bag with the name of the customer in the pick$-$up area. If the bag does not have an $"$X$"$ mark, the customer service representative hands in the bag to the customer and marks the e$-$prescription as delivered. If it has an $"$X$",$ the customer service representative gives the bag to the pharmacist $($who sits in another counter at the pharmacy store$).$ The pharmacist asks some questions from the customer and decides whether or not it is safe to give the medicines to the customer. If any of the medicines is unsafe, the pharmacist removes it from the bag, and records this removal in the pharmacy information system. The customer will get an automatic refund if they have paid for a medicine but the medicine could not be served to them.

In $95\%$ of cases, the delivery process works as expected. But in $5\%$ of cases, the medicines are not yet ready when the customer arrives. This typically happens during busy periods. In these cases, the customer service representative needs to manually figure out where the bag is located. It might be stuck in the quality assurance area, or it might be that the technician is still collecting the medicines from the shelves, or sometimes the technician has so much backlog that they might not yet have started to collect the medicines for that particular e$-$prescription when the customer arrives. Such $“$where$’$s the bag?$”$ episodes are stressful. They consume time from everyone, and lead to long delivery queues.

On average, the customer service representative takes $3$ minutes to serve one customer. But there is a lot of variability: sometimes it takes her $10+$ minutes to serve one customer, particularly when the e$-$prescription is not yet ready.

At peak times, $15$ customers arrive per hour on average.

In a pharmacy store, there is one customer service representative, one technician, and one pharmacist.

Customers complain frequently about long waiting and serving times when picking up their e$-$prescription. Customers are particularly annoyed when their e$-$prescription order is not ready yet, and especially when the customer service representative is unable to tell them right away how much time it will take for their e$-$prescription order to be ready. The pharmacy estimates that they lost $500$ customers in $2019$ due to long queueing times and slow serving times. A customer typically consumes $200$ euros per year in medicines on average.

Tasks.

a$)$ Capture this process $($as$-$is$)$ in BPMN diagram from the perspective of the pharmacy $($i$.$e$.$ only the tasks that involve pharmacy workers$)$

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