Calculate the total cost for beef and lamb, and the sub total, given their counts and unit costs.

$$\text{Total for Beef} = \text{count} \times \text{unit cost}$$ $$\text{Total for Beef} = 4 \times 45.00$$ $$\text{Total for Beef} = 180.00$$

$$\text{Total for Lamb} = \text{count} \times \text{unit cost}$$ $$\text{Total for Lamb} = 10 \times 50.00$$ $$\text{Total for Lamb} = 500.00$$

$$\text{Sub total} = \text{Total for Beef} + \text{Total for Lamb}$$ $$\text{Sub total} = 180.00 + 500.00$$ $$\text{Sub total} = 680.00$$

The completed table is:

Item	unit size	count	unit cost	Total
Beef	Kg	4	45.00	180.00
Lamb	Kg	10	50.00	500.00
Sub total				680.00

The final answers are:
Beef Total: $\boxed{\text{180.00}}$
Lamb Total: $\boxed{\text{500.00}}$
Sub total: $\boxed{\text{680.00}}$